Rimuru Tempest

"To everyone who went against us, we will bare our fangs and retaliate. To everyone who lends their hands to us, we will grant our blessing to them. To our opponents, we will do to them what they have done to us. In the future, I hope that we can be linked in a friendship one day."

- Rimuru declaring his ideals and goals in which would be the foundation of Tempest Rimuru Tempest, formerly known as Satoru Mikami (三条 悟 Mikami Satoru), is the main protagonist (and "badass") of Tensei Shitara Slime datta ken. He is the founder and King of the monster country Tempest of the Great Jura Forest and is regarded as one of the strongest Demon Lords among the Mighty Eight Star Demon Lords.

He is also known as Sensei to his former students.

Personality
He has a carefree personality. After becoming a king and experiencing the reality of his close friend's death, his naïve nature decreased. Unlike most other shounen MC, he has no problem with decimating any forces who dares to harm his subordinates and country, regardless of their numbers. As he progressed through the year, his thinking has become more like a True Demon Lord.

Rimuru also tends to "overeact" when there's danger to his close ones, such as his countrymen, subordinates, friends and students.

Appearance
Rimuru appears initially as a pure blue bodied slime, but upon becoming a Demon Slime, he is silver with streaks of gold. His mass has grown over time, accommodating larger human forms. initially, he only had enough mass to appear as a child normally, but by the time he became an Ultimate Slime, he had enough mass to appear as a 16 year old teen.

Fusion
He can use fire state in his slime form. Upon activating that skill, his aura becomes that of a flame. His facial temperature also raises to over 1400 degrees. It can be used as a weapon. The spider's mimicry gives him white spots. As for centipede's mimicry, he grows fangs. With the lizard, he grows scales. As for the giant bat, he sprouted demon-like wings. As the black wolf, he turned black and grew two horns - horns like those of a unicorn. As a black snake, his body is covered in a gold pattern.

Mimesis: Human
In this form, Rimuru possesses silver hair. There is no visible sex characteristics, however, the features are similar to that of a girl. This is probably because the original body was Shizue Izawa's. His gender is nowhere to be seen, but there are dangerously cute features.

This form doesn’t use black fog, because the slime body is equal in mass to the mass of the body formed. There is no discomfort. Also, because there's no need for black fog, there is no need to consume magic power.

Due to the fact that there are limbs now, there are improvements in motor abilities, but the body originally was that of a child though It’s still easier to move than slime. It is also possible for the mimicry to become adult using the black fog.

This form has no excretion and reproductive organs, given that there isn’t a need to excrete or reproduce, however, he is free to eat, taste and drink. Since he doesn’t need to breathe, he doesn’t do it even as a human. He could create lungs if he wanted to, but since he doesn’t see a need to, he hasn’t made them. He often wears Shizu's old mask to hide his demonic power.

In his human form, he wears a black fur coat and is depicted wearing a scarf. Under the coat, he wears the kimono that Shuna had made for him. Underneath that, he wears the pants he previously received as well as a steel thread underwear.

Since eating the Orc Disaster, his human form grew a bit. He was no longer a child, but a young human body that still retains a facial image resembling that of a girl. In that form,he is around 150 cm in height. In addition, he obtained a devil transformation form.

Upon becoming a True Demon Lord, and having his race change to Demon Slime, Rimuru has been depicted wearing a black overcoat, his nails also appear sharper and his overall human form appears slightly older.

Upon evolving further into an Ultimate Slime, Rimuru's human form looks like a 16-17 year old. This form is described by Velgrynd as appearing genderless, as it was unclothed upon generation, but has dangerously cute features to it. By simply willing it, Rimuru can generate clothes from his own mass and magic power in this form.

Prologue
Mikami Satoru worked at a major contracting firm and had never had a girlfriend. When meeting up with his junior, Tamura, Mikami took a criminal/robber’s blade aimed at Tamura. As he laid dying, his thoughts and strong regrets triggered the acquisition of six resistance skills and his two fundamental Unique Skills, Predator and Great Sage. And as he unknowingly wished for a body with no blood he was reincarnated into a slime.

Empowerment Arc
Once reincarnated, he wakes up to find that he has reincarnated as a slime, which takes some getting used to. As slimes don’t sleep, can't see and only have the sense of touch, he eats nearby grass to pass the time. After 90 days of boredom, the skill Great Sage finally finishes integrating and things start to pick up. It turns out the grass he ate out of boredom is actually Hipokte grass, a material for high grade health restorative potions.

In the cave, he finally meets another life form, Storm Dragon Veldora. The "Great" Storm Dragon Veldora not only proves to be a bashful friend, but also teaches him how to perceive the surroundings via magical energy by the use of the skill Magic Perception. Veldora also reminisces about the peerless beauty of a Hero that defeated him 300 years ago...the two friends then name each other. Veldora becomes Veldora Tempest, and our protagonist is then named as Rimuru Tempest. To break the unbreakable Endless Prison, they agree to stake Veldora’s freedom on Rimuru’s Unique skills, and Veldora gets stored in Predator’s storage space, stuck in time and undergoing Great Sage’s analysis.

With a new goal in mind and friend in heart, Rimuru eventually gets out of the cave. It was only after using the Great Sage’s mapping function that he succeeded though. During the 30 days after meeting Veldora, Rimuru eats more grass and rocks, namely Hipokte grass and Magic Ore, as well as other monsters that he fights and kills, and develops some personnel fighting skills to defend himself.

Whilst exploring the forest outside the cave, Rimuru plays around with a sound-emitting skill acquired from predating a cave bat, and achieves speech. He meets a group of Goblins and gets invited to their village. It turns out the Goblins are being threatened by a pack of Fang Wolves. After hearing the situation from the village chief and being promised eternal loyalty, the good-natured Rimuru helps them, defeats the wolf pack’s leader, and somehow acquires the rest of the pack as subordinates. He tells the goblins and wolves to get along with each other, and thus the new village is born under his rule.

In the fantasy world, most monsters are nameless, with only high-magic power beings being able to bestow names on others. When Rimuru realizes that there is no convenient way to get their attention beyond ‘Oi, you! No, not you, the one next to you, yes you!’ he names them all. Among them, the village chief is named Rigurdo, the chief’s son is named Rigur, the new wolf leader is named Ranga, and a natural bloke goblin is named Gobuta, who later becomes a remarkable figure among Rimuru's top retainers. All the named monsters evolve, becoming stronger, but they no longer fit their clothes or their door frames, so Rimuru, along with Gobuta, Rigur, Ranga and a group of Hobgoblins and Storm Fanged Wolves, go to the Dwarf’s kingdom to acquire clothes and a skilled house builder.

Rimuru, after some misunderstandings, helps out a masterful blacksmith, Kaijin to fill his quota on swords per the King’s request. It turns out the Magic Ore Rimuru ate in the cave is a high class smithing material. In return for helping him out, Kaijin promises to procure Rimuru a good blacksmith, and Rimuru offers to help Kaijin’s friends, three dwarves brothers very skilled at their crafts but bad at business. However, a certain Minister Bester ruins this, and Kaijin, after delivering his quota, is exiled from the country along with Rimuru and three dwarves brothers. The four dwarves, Rimuru and company then return to the village.

Upon returning, some other Goblins' villages join Rimuru's new village after hearing of his grandeur. Rimuru names and evolves them afterward. The dwarfs and hobgoblins immediately start working on building housing. As they are constructing the new town, Rimuru meets three adventurers who are surveying the land in front of Veldora’s cave on the Freedom Association Branch in the small country Brumund’s behalf. The adventurers are a happy bunch. A person accompanying the trio loses control of an inner flame spirit shortly after meeting Rimuru, and it’s up to Rimuru to stop it. After settling the situation, Rimuru sends off the adventurer trio. Shizue, the flame spirit’s possessor, is a World Traveler, originally from Japan. She was summoned by Demon Lord Leon Cromwell, and asks Rimuru to take up her revenge and help her student while she becomes a part of his strength, which he accepts.

After absorbing Shizue, Rimuru can now transform into a human - a beautifully androgenous human, with an alterable age. Other key abilities acquired from absorbing Shizue and the fire spirit include cloning, Fire manipulation, and a new Unique skill Shapeshifter.

Empire's Invasion Arc
During the Empire's invasion, he stayed in the command center most of the time. Besides of setting up a surveillance system, he took almost no action during the war. Even though he wanted to use his power to ensure the safety of his people, Benimaru advised against it because he wanted to prove to Rimuru that they can protect their country and their lord by themselves. After Diablo massacred the remaining enemy, Rimuru performed a ritual to revive most of the Empire's invading force. Even though he called this revival temporary, the revived soldier can live their lives like normal. However they would never able to use any Skill and magic usage will be quite laborious and at worst they will unable to cast any magic for the rest of their life, Rimuru also put a curse on the soldiers to ensure they can never attack Tempest. Every souls were reaped and collected inside Rimuru's Gluttonius King Beelzebub's pouch. After the first battle of this war Raphael told him "Would you like to grant 100,000 souls to" said subordinates list. These souls would grant a Demon lord evolution. The one sided decimation of the Empire's forces and subsequent revival has earned Rimuru the worship of many Empire soldiers (even Khrishna, the Royal Knight, has considered Rimuru his God.)

After he revived the soldiers with about 10,000 souls, He used the remaining to start the Evolution ceremony. He grants several of his subordinates demon lord evolution, some evolved immediately along with their subordinates, and some seemed to require time to complete their evolutions. Soon after, Guy Crimson arrived and asked why he felt so many demon lord evolutions at once to which Rimuru(wanting to avoid additional conflict) flatly explained it was due to his Ultimate Skill "Gluttony King Beelzebub" (the only one he has revealed to others seeing as they can only see he has one but not how many). As per Guy's request, he evolved two of his subordinates and taught them how to make cakes. Velzard, Veldora's elder sister, arrived after Guy causing Veldora to fly away to "help Ruminas". After Veldora got dominated by the Emperor's ultimate ability, Rimuru felt the Soul Corridor detached and flew into a rage while teleporting in front of Velgrynd, the Emperor, and the airships containing the Beast corps.Rimuru summoned the Black Numbers to defeat the rest of the army and to expose the Emperor, while he fought the dragons. Rimuru consumed Veldora's body, after being told that Veldora detached his Soul Corridor to save Rimuru and was safe. Raphael reattached the Soul Corridor and began an evolution for both Veldora and Rimuru. Rimuru became the 5th “True Dragon” - the Ultimate Slime (Viscous Dragonoid Demon God).

Abilities
Using Great Sage, he can quickly read a book by copying it completely. Simultaneous utilization of Great Sage and Gluttony allow the high speed copy and review of the magic books that he holds in his hands. With that, he can postpone checking the content of the book for a later time. Unfortunately, it is not possible to be able to use magic just by copying the books. But, taking and copying it, he’s able to make the index of the magic books that he wants. After this, it’s necessary for him to study them one by one. Taking that into consideration, it can be said that Rimuru holds a great amount of knowledge regarding magic as well as being speculated to be able to use most of the magic in those books, if not all of them.

After evolving into a Demon Slime, the ability to freely change between material and spiritual bodies was added. As the result of the evolution, his total magical energy greatly increased. Compared to the original amount, it was ten times as large.

He can use skills that don’t rely on magical energy such as raising his abilities using fighting spirit technique with Herculean Strength in addition.

Thanks to Hakurou’s guidance, his skills with the sword was improved.

He was able to analyze the summoning magic he first saw during the adventurer exam and acquired the skill to use them.

After fighting the Guardian of the Labyrinth, Rimuru has the ability to create golems. The abilities of the Golem can be added through the possession a spirit or a demon as Rimuru made them inhabit the Golem. The outward appearance of the golem is created according to his imagination.

Magic

 * Dragon Species Magic
 * Nuclear Strike Magic
 * Great Spirit Summoning
 * Great Demon Summoning
 * Thought Battle Magic
 * Physics Magic
 * Flight Magic
 * Cleaning Magic: He learned it from Ellen. When he uses it, his magic amplifies the effects of the spell, cleaning everyone in the vicinity.
 * Magic Energy Manipulation Archive

Species Skill

 * Decomposition Absorption
 * Endless Regeneration

Ultimate Skills

 * Wisdom God Ciel
 * Thought acceleration
 * Analysis expert
 * Parallel processing
 * Fusion
 * Separation
 * Chant discarded
 * All of creation
 * Food chain, etc
 * Void God Azatoth
 * Forced Soul Eating
 * Nothingness collapse
 * Imaginary space
 * Space-time domination
 * Multidimensional Barrier
 * Dragon species release
 * Dragon species recall
 * Abundance King Shub-Niggurath
 * Ability creation
 * Ability replication
 * Ability gifting
 * Ability storage

Unique Skills

 * Traveler

Daily Skills

 * Magic Perception
 * Heat Detection
 * Auditory Perception
 * Supreme Olfaction
 * Demon Lord’s Ambition

Battle Skills

 * Thread Manipulation
 * Cloning: For Rimuru, the Cloning skill is only limited as far as his Unique skills allow.
 * First, Great Sage: As long as the user is within a kilometer radius, a clone can be created. Should he go beyond that limit, his consciousness link with the clone will be severed, and the clone can only respond to basic commands. Since vision is always shared, and an order can be changed at any time, the clone can be used for long range reconnaissance missions.
 * Second, Predator. The stomach can only release the true body. A clone can be predated and stored, but cannot be extracted. However, feedback regarding skills, etc. can be acquired.
 * Third, Shapeshifter: Only one fusion is allowed while division is unchanged.
 * Chaos Breath
 * Law Manipulation
 * Attribute Change
 * Thought Domination
 * Demon Lord Transformation
 * Future Attack Prediction
 * Holy Sword Technique: Melt Slash

Mimic/Mimesis
When a certain amount of damage accumulates, the mimicry wears off. Afterwards, there is no damage transfers to his slime body. Because the skill Mimesis utilizes Magic Essence to create a new body, the main body cannot be damaged. There are two restrictions on this skill. After Mimesis wears off, he is unable to transform for the next 3 minutes, and the other was that mimicking a demon/monster required a certain amount of magic essence. The amount of magic essence required is relatively insignificant, hence, it is not an issue, and there is no duration limit to the skill. The reason for black fog when mimicking into monsters is to compensate for the missing parts.
 * Human
 * Demon
 * Spirit
 * Flame Giant
 * Star Wolf
 * Black Snake
 * Lizard
 * Giant Spider
 * Giant Bat
 * Centipede
 * Goblin
 * Orc

Resistances

 * Physical Damage Nullification
 * Natural Attack Nullification
 * Status Change Nullification
 * Spirit Attack Nullification
 * Dark/Holy Magic Resistance

Anti-demon Mask
A magic mask left by Shizue Izawa. As it's name implies, it suppress demonic power.

Dark Leather Guards
He received dark leather guards from Garm.

Kimono
It is made of glossy linen - first-class silk that feels wonderful to the touch. Putting the silk to his body, it immediately changes size to fit him. After mixing with his magic, it became as if a part of his body. Even in his adult form, the clothing grows appropriately. This clothing absorbs the aura of its wearer, and can change its appearance. Rimuru’s clothing turned jet black to match his aura. Even if this clothing rips, as long as it absorbs his magical energy, it can repair itself.

Wolf Outerwear
The materials used came from the previous Fanged Wolf leader. But, due to the wolf clan’s evolution, the fur had turned black. As an extra bonus, it seems that the fur had quite some magical energy stored in it. It has tremendous defense power. This attire happened to have become a magic item. It will always perfectly fit the one who wears it. In other words, even if Rimuru turns into his adult version, the clothing won’t rip.

Relationships
Veldora: Rimuru and Veldora became fast friends after meeting each other and are now best friends to each other. Veldora has such a great amount of trust in Rimuru that he allowed Rimuru to devour him the first time in order to be freed from his sealed prison. When Veldora was captured by the Eastern Empire, Rimuru felt a great anger that he never felt before, indicating their closeness to each other as if they're families. Since they named each other, Rimuru and Veldora can be considered son and father or brothers to each other.

Tempest:
The country of Tempest was found and established by Rimuru with him as its King. Every single mosnter living within it, from soldiers to citizens to the Executives, swear absolute and eternal loyalty to Rimuru due to his nature and charisma. many of them even worship him as their God while others idolize him as one of the top idols of Tempest. On top of that, if a single sign of insult and disrespect, much less actual insult and disrespect, is showed to their King, the perpetrator is bound to induce their wrath.


 * Rigurdo: The village chief of the first goblin village that Rimuru met and saved. After being saved and named by RImuru, he swore the entire village's loyalty to Rimuru, becoming his first subordinates. As a Goblin King, he is entrusted by Rimuru in governance of the country and its internal affairs, which he performs dutifully.


 * Rigur: The second son of Rigurdo who, like his father, is also extremely loyal to Rimuru as one of his first subordinates.


 * Ririna: She is entrusted by Rimuru to manage Tempest's production affair as its supervisor. Like all of citizens of Tempest, she is also extremely loyal to Rimuru.


 * Gobuta: One of the few Hobgoblins that have the most interactions with Rimuru himself. Rimuru regards Gobuta as a genius though quite an idiot at the same time. Nevertheless, Rimuru trusts him and considers him among his most trusted subordinates as Rimuru appointed Gobuta to be the Commander of the First Corps. During the Evolution Ceremony, he was granted the "right" to address Rimuru casually, indicating that Rimuru considers him as close as friends.

Diablo: The most fanatical in his loyalty, h e is truly loyal to Rimuru, and will spread calamity if ordered. With his aim being Rimuru's right hand man, Diablo strives harder than anyone in Tempest in order to impress and prove his loyalty Rimuru, such as forming the Black Corps - the strongest Corps in Tempest. Rimuru also sees Diablo as one of his most trusted retainers and gets impressed by him many times due to  his outrageous display of his loyalty.

Benimaru:  Benimaru is one of the most loyal servants of Rimuru. Both of them have a very good Master-Servant relationship. H e is content with his current position with Rimuru as the Lord he serves. As one of the military commander, he merely wishes to rampage to his heart’s content. In addition, there is a deep trust between them.

Souei: Similar to Benimaru, Souei and Rimuru also has a deep trust between each other as Rimuru always entrusts Souei for intelligence gathering. For Souei, serving under Rimuru fills him with the highest of pleasure as he has wanted to serve under someone who he deems worthy. Between the two of them, Rimuru taught Souei the basics of being a "Ninja", making Souei who he is now.

Hakurou: One of the most loyal servants of Rimuru and out of all of them, Hakurou is probably the one Rimuru respects the most as Rimuru considers him as a grandfather-figure for him as well as for Tempest. Rimuru learns and improves his sword techniques from him.

Shion:  Shion is the "secretary" and "bodyguard" of Rimuru. They have a close relationship to each other to the point that Rimuru was full of pain and anger when she was killed because of the "naive rules that he imposed". Thus, he became a Demon Lord in order to revive her and the other victims, and was very glad when she revived. Shion seems to be in love with Rimuru. However, most of the time, Shion continues to incur disappointment within Rimuru due to her failure of being an appropriate "secretary", mostly because of her idiocy and "terrible" cooking. Nevertheless, Shion still strives to be useful to Rimuru and Rimuru appreciates and holds her dear in return.

Shuna: One of Rimuru's most loyal servants. She is entrusted by Rimuru in regards to Tempest's Department of Production. Because of Rimuru's kindness, she falls in love with him. After entrusting and passing all of her skills to the Department of Production. Shuna becomes Rimuru's full-time secretary, which he appreciates the most since Shion is busy and quite a disappointing "secretary".

Kurobee: Another of Rimuru's most loyal servants. Rimru and Kurobee respects each other as Kurobee is loyal and grateful to his lord while Rimuru appreciates his blacksmith skills. The two often have chat in making new armaments for Tempest based on Rimuru's ideas.

Kaijin: The Dwarf swears loyalty to Rimuru after Rimuru helped him out of his predicament of meeting the quota for providing swords to the Dwarven Kingdom and being exiled from the Kingdom. He helps Rimuru a lot in developing the foundation of Tempest.

Testarossa, Ultima, Carrera : These three were among the Demons summoned and recruited by Diablo to serve Rimuru as the then "new" Black Corps. They are the strongest among those recruits. Just like all of Rimuru's subordinates, they swear absolute loyalty and are devoted to Rimuru. They even regard themselves as Rimuru's lowly servants despite being among his most powerful subordinates, and they also kind of worship him as their God.

Shizue Izawa: Though she and Rimuru met each other not for long, they have developed quite a bond with each other after discovering themselves being fellow Japanese World Travelers. Shizue is fond of him and trusts him deeply due to his nature, to the point that she requested to be absorbed by Rimuru and entrusted her students to Rimuru as she was dying after Rimuru saved her from being taken over by the Fire Spirit Ifrit. Rimuru is also fond of her as he addresses her as Shizu and strives to fulfill his promise with her. After absorbing Shizu, Rimuru's human form is similar to that of a younger Shizu, albeit with silver hair and golden eyes. It seems Shizu's spirit continues to linger within Rimuru as some sort of a guardian spirit for him.

Demon Lords
Rimuru's relationships with each of the Demon Lords are different between each one
 * Milim Nava: She and Rimuru became close friends over the course of her two week stay in Tempest. Shortly after her arrival, Rimuru gave her "dragon knuckles" to inhibit her power so she wouldn't hurt or kill any of his citizens accidentally and since then, she rarely takes them off due to her fondness of Rimuru, though when Rimuru made her do so while she was eating, Milim sulked for the entire day. They have become so close to the point that she was willing to pretend to be under Clayman's control in order to expose his plot and help Rimuru. This close friendship can be assumed to give birth to "love" within Milim in regards of her feelings towards Rimuru.
 * Ramiris: Their relationship started off rocklily due to Rimuru destroyed her golem and looking down on her due to her cheeky attitude to him. Nevertheless, Rimuru still made a new golem for her, in the form of Beretta, for compensation. Because of that, she felt gratitude and became friendly with him, to the point that she warned Tempest of its possible impending doom due to Clayman's plan at the Walpurgis. She then joined Tempest and moved her Labyrinth to next to it. After that, Rimuru employed her to manage the Labyrinth as an attraction for Tempest and they had fun creating the Labyrinth together. Along with Veldora and Milim, they also had fun together using the avatars created by Rimuru to enjoy the Labyrinth. Ramiris developed many researches that would benefit Tempest such as the Demon dolls for the Black Corps.

Karion: Karion and Rimuru get along with each other, especially when they both have the experience to have to deal with Milim's antics and childish behaviours.

Frey: Frey and Rimuru get along with each other,  especially when they both have the experience to have to deal with Milim's antics and childish behaviors. In addition, Rimuru respects her to some degree as she is among the few people who can rein in Milim and force her to be obidient.

Dino: Rimuru and Dino can be said to be on friendly terms with each other. As Dino is chased out of Dagrule's place and then told by Guy to go to Tempest, he is employed by Rimuru as Ramiris's assistant.

Leon Cromwell: At first, Leon held no interest in Rimuru while Rimuru disliked Leon to the extreme due to Shizue. Upon learning his relationship with Chloe and his intention, their relationship underwent some changes with Leon recognizes Rimuru and Rimuru respects him to some degree though still dislikes him. They eventually form an alliance to rescue Chloe.

Dagrule: Rimuru and Dagrule can be said to be on good terms with each other as they converse casually and pleasantly with each other during the event of Walpurgis Banquet. Dagrule trusts Rimuru enough to send his sons over to Tempest to learn.

Ruminas Valentine: Ruminas disliked Rimuru at first due to his connection with Veldora. However, after witnessing Rimuru's "performance" at the Walpurgis, she began to take an interest in him. Later on, as they both share the common goal of saving Chloe, they allied with each other. Occasionally, Ruminas' haughty attitude towards him look like that of a tsundere, as noted by Rimuru.

Guy Crimson: Ever since hearing the rumour of Rimuru, Guy had begun to take an interest in the Slime that managed to become a Demon Lord. After seeing him eye to eye, Guy's interest in Rimuru grew even more knowing that he too possessed Ultimate Skills. For a while, Guy suspected Rimuru due to the fact that Tempest suffer no casualty in war with the Eastern Empire, Guy's enemy, and the awakening of several True Demon Lords in Tempest. Thanks to Rimuru's explanation, the misunderstanding is solved, and the two became friendly to each other again, with Rimuru eventually help Guy evolve his 2 subordinates and teach them how to make cakes for Guy.

Elumeshia Elure Sarion: The half-elf Empress of Sarion Dynasty visits Tempest on very few occasions. But just from her first visit during Tempest Tournament, she somehow became drinking buddies with Rimuru along with the Dwarf King Gazelle Dwargo, and they often dragged him to drink and discuss national cooperation with each other during that time.

Elalude: The Duke of Sarion Dynasty who became acquainted with Rimuru through his daughter Ellyune. At first, he tried to act angry at Rimuru for "stealing" his daughter only to fail horribly. Afterwards, he and Rimuru have a professional relationship with each other as the representatives of two allied countries.

Ellen/Elyune: One of three advanturers who became friends with Rimuru and Tempest. She was among the first humans who ally with Tempest and defend its citizens despite them being monsters. Among the 3 adventurers, she's probably the closest to Rimuru as she trusts him enough to tell him the information of how to become a True Demon Lord and how that can save Shion and the murdered Tempest citizens.

Gazelle Dwargo: The Dwarf King took an interest in Rimuru upon discovering he carrying inside himself pure high-quality restoration potion and being able to create a bunch of high-quality Demon Steel swords though he had to exile him regrettably due to Bester's complain. He started to keep an eye on Rimuru ever since then. After his visit to Tempest, Gazelle decided to recognize "Tempest" and ally with it after realizing its potential under Rimuru, in fact, it is Rimuru's potential what interests and entertains him the most. Rimuru's growing potential eventually reached to the point that the Dwarf King even lampshaded and complained about it. Nonetheless, Gazelle still regards Rimuru as equal and they sometimes become drinking buddies.

Chloe O’Bell: One of the children that was entrusted by Shizu to Rimuru and later became one of Rimuru's first students. Initially, just like the rest of the children, Chloe was wary of him. However, as Rimuru made efforts to become closer to them and teach them properly, all of them became close and respect Rimuru greatly, calling him "Sensei". Among those children, Chloe becomes the one with the most affection towards Rimuru as she falls in love with him, even declaring she loves him though Rimuru didn't take that seriously initially. Even after being controlled by Yuuki, she still thinks of her Sensei and regards him highly, to the point that she said that Rimuru is the key to change the future. Chloe is also an important person to Rimuru as he decides to definitely save her from Yuuki. It's interesting to note that, whether intentionally or not, Chloe and Rimuru are somewhat stuck in a stable time loop, as his bringing her to Ramiris granted her her powers over time and saved her life, while her tinkering in the past led to Veldora being sealed exactly where Rimuru would be born centuries later, in other words, the two of them are directly responsible for each other's existence and rise to power.

Sakaguchi Hinata: Their relationship has a rocky start since they both were initially hostile to each other, though it's mostly due to Yuuki's manipulation in the background. However, as Rimuru intends in keeping Shizue's promise, he always tried to reach an understanding with Hinata, to the point of going easy on her after he became a Demon Lord and sparing her Holy Knights during their subjugation of Tempest. For Hinata, she looked down on Rimuru at first as she regarded him as just another "monster", but after learning he survived and evolved into a True Demon Lord, she raised her views of him and became more cautious towards him. In the end, however, after being convinced by Shizue's spirit and reaching an understanding with Rimuru, Hinata becomes one of Rimuru's most trusted allies and they even address each other casually. It's important to note tht both Hinata and Rimuru, before the latter ascended as a Demon Lord, had their thoughts restricted by Yuuki, thus making it impossible for them to think of compromising, especially in Hinata's case, as her restriction was so complete she was more or less mechanical minded. Hinata has grown to respect Rimuru highly as she totally agrees with Tempest becoming the "center" of the world, she also understands Chloe's faith in him and seems to share it. Amusingly, when Rimuru was being mocked and Hinata was being insulted by a group of officials at the assembly who believed the former could be turned into a minion while the latter only achieved her position by sleeping with a cardinal, they seemed able to communicate with their eyes, both when they were wondering what the other would do and when they calmed down because Shuna retaliated on their behalf before either of them could do so.

Major and Minor Battles

 * Rimuru versus Ifrit - Rimuru won by devouring Ifrit through Predation.

Spoils of Battles

 * Skills

Trivia
In Manga and Light Novel Rimuru's personality is a kind hearted, naive and Pervert.