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

"Great Demon Lord" Rimuru Tempest ("大魔王" リムル・テンペスト, "Dai Maō" Rimuru Tenpesuto), formerly known as Mikami Satoru (三条 悟), is the main protagonist 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 as well as the only known Great Demon Lord currently. He is also a partner and best friend of the True Dragon Veldora Tempest.

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 the death of his close friend Shion, his naïve nature decreased. Unlike most other shounen protagonists, he has no problem with decimating any forces who dare to harm his subordinates and his country, regardless of their numbers. As he progresses through the story, he slowly becomes more and more like a True Demon Lord.

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

Appearance
Rimuru initially appears as a pure white-bodied slime, but upon becoming a Demon Slime, his body turns silver with streaks of gold. His mass has grown over time, allowing him to accommodate larger human forms. Towards the beginning of the story, he only has enough mass to appear as a child, but by the time he becomes an Ultimate Slime, he has enough mass to appear as a 16 year-old.

Mimesis: Human
In this form, Rimuru possesses silver hair. There are no visible sex characteristics; however, he is often mistaken for a young girl. This is likely due to the fact that the original form belonged to Shizue Izawa.

Since his slime body is equal in mass to his human form, he fills this body with solid shape instead of black fog. Without the black fog, there is no additional magic consumption required to maintain the form. There is no discomfort when he assumes this form. If he uses the black fog, he can also assume the form of an adult.

His fine motor capabilities improve when he is in his human form, and he finds it easier to move in than his slime form. Even though it appears to be human, this form has no need for breathing, excretion, and reproductive organs. However, he can freely eat, taste, and drink.

In his human form, he wears a black fur coat and a scarf. Under the coat, he wears the kimono and pants that Shuna had made for him. He also wears the steel thread underwear he makes himself. He often wears Shizu's old mask to hide his demonic powers.

Since eating the Orc Disaster, his human form grew a bit. He now assumes the form of a pre-teen with feminine features. In this form, he is around 150 cm in height. In addition, he has obtained a devil transformation.

Upon becoming a True Demon Lord and changing 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 ages to 16-17 years old. This form is described by Velgurind as appearing gender-less (as she saw it nude upon creation) but with dangerously cute features. By simply willing it, Rimuru can generate clothes from his own mass and magic power.

Prologue
Mikami Satoru worked at a major contracting firm and 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. As he unknowingly wished for a body with no blood he was reincarnated into a slime.

Rimuru/Empowerment Arc|Empowerment Arc Rimuru/Forest Disturbance Arc|Forest Disturbance Arc Rimuru/Life in the Royal Capital Arc|Life in the Royal Capital Arc Rimuru/Birth of a Demon Lord Arc|Birth of a Demon Lord Arc Rimuru/Saint Demon Confrontation Arc|Saint Demon Confrontation Arc Rimuru/Founding the Demon Capital Arc|Founding the Demon Capital Arc Rimuru/Demon Lords' Gambit Arc|Demon Lords' Gambit Arc Rimuru/Empire's Invasion Arc|Empire's Invasion Arc Rimuru/Ryuuma Clash Arc|Ryuuma Clash Arc Rimuru/Tenma War Arc

Rimuru's Elegant Escape
Many years passed and technology is high. many schools. Rimuru infiltrates in search of corruption. puts down. Comes back and finds Shion and Shuna tore his main body in two.

Other World
Veldora and Ramiris travel to another world. Beretta is dragged along. World is highly developed with cyborgs and super robots and no magic. After large nuclear war due to excessive population. Joins resistance. Emperor betrayed. Tetra Rex ultimate device using multi nuclear bombs. Institute developing infinite energy goes haywire and world is threatened by destruction. Rimuru appears and saves them. World is still being destroyed by large pollution and super beasts mutant humans. Veldora reveals true form and erases pollution and restores earth with same spell as used in Luminas' kingdom. Ramirisu awakens sleeping great spirit in planet and revives the earth. Rimuru is worshiped as a god.

Onsen
Various exploits of Rimuru during his time shortly after awakening as a demon king as he explores the wonders and nudity of the onsen.

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.

Using Manas: Ciel, Rimuru can copy space manipulation techniques simply by seeing it, such as when he copied the Unique Skill Restrainer which belonged to Gozurl. Like this, Rimuru can also copy practically any other Skill or Magic as long as he has seem it.

After the fight with Yuuki, Rimuru gained the ability to use Instantaneous Movement] which lets him travel across Space-Time at will. Using this ability, Rimuru was able to travel to his old world where he saved his past self Mikami Satoru from death. He was also able to return from the place beyond time where he was exiled to by Yuuki. The ability as described is the ability to reach the desired point instantly across space and time.

Magic

 * True Dragon Species Magic
 * Upper tier Spirit Summoning
 * Upper tier Demon Summoning
 * Nuclear Strike Magic
 * 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. (Disappeared after integrating into the Magic Energy Manipulation Archive)
 * Magic Energy Manipulation Archive
 * Original Magic

Species Skill

 * Decomposition
 * Absorption
 * Endless Regeneration

Manas

 * Manas: Ciel (God's Wisdom Core) [ Wisdom Lord Raphael's core that obtained individuality.]
 * Thought Acceleration
 * Analysis expert
 * Parallel processing
 * Fusion
 * Separation
 * Chant Annulment
 * All of creation
 * Food chain, etc

Ultimate Skills

 * Void God Azathoth
 * Soul Consumption
 * Turn Null (Nothingness collapse)
 * Imaginary Room
 * Space Time Control
 * Multidimensional Barrier
 * True Dragon Release
 * True Dragon Core Transformation
 * Multi-existence (Obtained after analyzing Evil Dragon Lord Azi Dahaka)


 * Harvest Lord Shub Niggurath
 * Skill Creation
 * Skill Duplication
 * Skill Gifting
 * Skill Bank


 * Evil Dragon Lord Azi Dahaka
 * Thought Acceleration
 * Parallel Thought
 * Organic Matter Control
 * Duplication Mass Produce
 * Ability Absorption
 * Space Control
 * Multidimensional Barrier.

Former Ultimate Skills

 * Gluttonous King Beelzebuth (Synthesized to create Void God Azathoth)
 * Predation
 * Analysis
 * Stomach
 * Mimicry
 * Segregation
 * Decomposition
 * Supply
 * Food Chain
 * Soul Eater
 * Wisdom Lord Raphael (Synthesized to create Void God Azathoth)
 * Thought acceleration
 * Appraisal
 * Parallel Processing/Analysis
 * Chant Annulment
 * Fusion
 * Separation
 * All of creation
 * Thought: Analysis and Judgement


 * Storm King Veldora (Synthesized to create Void God Azathoth)
 * Storm Dragon Summon
 * Storm Dragon Release
 * Storm Dragon Magic Archive
 * Bladed Storm: Crystallization
 * Scorch King Velgrynd (Synthesized to create Void God Azathoth)
 * Scorch Dragon Summon
 * Scorch Dragon Release
 * Scorch Dragon Magic Archive
 * Bladed Flame(Scorch): Crystallization


 * Covenant King Uriel (Disappeared after creating Harvest Lord Shub Niggurath and Void God Azathoth)
 * Spatial Domination
 * Defense Barrier
 * Infinite Prison
 * Secluded Space

Unique Skills

 * Traveler
 * Puppeteer

Former Unique Skills

 * Great Sage (Evolved into The Ultimate Skill Wisdom King Raphael)
 * Predator (Evolved into Gluttony after absorbing Starving Ones)
 * Gluttony (Integrated with The Unique Skill Heartless Ones then evolved into The Ultimate Skill Gluttonous King Beelzebuth)
 * Heartless Ones (Integrated with The Unique Skill Gluttony then evolved into The Ultimate Skill Gluttonous King Beelzebuth)
 * Endless Prison (Evolved into The Ultimate Skill Covenant King Uriel)
 * Shapeshifter (Integrated with The Unique Skill Great Sage then evolved into The Ultimate Skill Wisdom King Raphael)

Extra Skills

 * Sage (Evolved into The Unique Skill Great Sage)
 * Water Manipulation (Disappeared)
 * Segmenting (Disappeared)
 * Black Flame (Disappeared)
 * Black Lightning (Disappeared)
 * Barrier (Evolved into Multiple Barrier)
 * Shadow Step (Evolved into Spatial Transfer)
 * Spatial Transfer (Disappeared after gaining Covenant King Uriel)
 * Multiple Barrier (Become irrelevant and disappeared after gaining an Ultimate Skill)
 * Magic Perception (Disappeared after gaining Universal Perception)

Normal Skills

 * Universal Perception
 * Universal Body Transformation
 * Great Demon Lord's Haki

Battle Skills

 * Thread Manipulation
 * Cloning: For Rimuru, the Cloning skill is only limited as far as his Unique skills allow. (Integrated into Void God Azathoth)
 * 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 (Disappeared after gaining Gluttony)
 * Law Manipulation
 * Element Alteration
 * Telepathy Control
 * Clairvoyance
 * Demon Lord Transformation (Disappeared after evolving into an Ultimate Slime)
 * Future Attack Prediction (Precognition)
 * Holy Sword Technique: Melt Slash (Disappeared)
 * Hydraulic Propulsion (Evolves into Extra Skill Water Manipulation)
 * Water Current Control (Evolves into Extra Skill Water Manipulation)
 * Water Blade (Evolves into Extra Skill Water Manipulation)

Mimic/Mimesis

 * Human
 * Demon
 * Spirit
 * Flame Giant
 * Acquired Skills: Clone, Fire State (Flame Change), Area Boundary
 * Star Wolf
 * Acquired Skills: Supreme Sense of Smell, Telepathic Communication, Intimidation, Shadow Step, Black Lightning
 * Black Serpent
 * Acquired Skills: Heat Detection, Noxious Breath
 * Lizard
 * Acquired Skill: Body Armor
 * Giant Spider
 * Acquired Skills: Sticky Thread, Steel Threat
 * Giant Bat
 * Acquired Skill: Ultrasound Waves
 * Centipede
 * Acquired Skill: Paralysis Breath
 * Goblin
 * Orc

When a certain amount of damage accumulates, the mimicry wears off. Afterwards, there is no damage transfers to his slime body. Because the skill Mimicry utilizes Magic Essence to create a new body, the main body cannot be damaged. There are two restrictions on this skill. After Mimicry 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.

Fusion

He can use the skill『Fire State』 in his slime form, allowing his aura to turn into flames. His surface temperature increases to 1400 degrees Celsius and his body becomes a weapon.

Resistances

 * Physical Attack Nullification
 * Natural Elements Nullification
 * Abnormal Status Nullification
 * Mental Attack Nullification
 * Hybrid Attack Resistance

Equipment
A magic mask left by Shizue Izawa. As it's name implies, it suppress demonic power. It also serves as a treasured memento of Shizue, as it is the only remaining possession of Shizue which Rimuru possesses. He received dark leather guards from Garm. 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. 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. Rimuru equipped with a demon sword a Magic Swords a high-purity Demon Steel weapons inserted with high-purity magic stones/gems he created a sword using Bladed Storm Crystallization and Bladed Flame(Scorch): Crystallization from Void God Azathoth call The Sword Of Tempest.
 * Anti-demon Mask
 * Dark Leather Guards
 * Kimono
 * Wolf Outerwear
 * Swords

Relationships
Rimuru/Tempest relationships|Tempest Rimuru/Human Heroes Dragons Other relationships|Heros & Dragons Rimuru/Relationships Kingdoms/Kings/Queens etc...|Royalty & Kingdoms Rimuru/Demon Lords Relationships|Demon Lords Rimuru/Enemies relationships

Trivia

 * In Manga and Light Novel Rimuru's personality is Kind-hearted, Naïve and Pervert.


 * He along with Shuna and Shion are voted as the three major idols of The Monster Country Tempest.