Diablo

""Hee-hee-hee-hee-hee.The birth of a new demon lord! Quite an old sensation but a familiar one.What a truly wonderful day ! Such a offering-and the very first order from our lord, no less.This is such an honor; I couldn't possibly be more enthusiastic about this.Would it be all right to continue serving you in the future?"."

- Diablo

Diablo (ディアブロ), also known as Noir (原初の黒) is one of the seven Demon Primordials and an Executive of the Jura Tempest Federation as the second Secretary of Rimuru Tempest.

Arch Demon


Black hair with streaks of red and gold, as well as golden eyes, Noir was finely dressed in garments like that of a prince. Other than that he looked like a normal human, though he was able to unfold wings as well.

Demon Peer


Diablo's change in appearance is possibly the least drastic after any evolution, only his princely garments were replaced by a Butler outfit, reflecting his wish to serve Rimuru, but despite that, his dignity didn't decrease, but rather even increased.

Personality
Diablo is whimsical but also very calculative when he wants to be. He usually shows an absolutely composed attitude, but whenever anyone insults Rimuru, his polite exterior turns into a cold form of malice and he proceeds to punish the "sinner" in the most painful way imaginable unless it goes against Rimuru's orders. However when someone has a good relationship with Rimuru, Diablo usually treats them amiable, though he might still manipulate them for his own ends, with "his own ends" usually referring to being close to Rimuru more often.

Diablo follows Rimuru's orders to the letter. When tasked with increasing the difficulty of Flamaire's test as a guard for guests to Tempest, Diablo summoned a moderately strong monster. The moment Flamaire got paralyzed by the creature's goo and still showed a will to fight, Diablo sent the creature away and went to report back on Flamaire's actions. Should there be some "grey area" in his instructions, Diablo has the freedom to carry out his orders how he sees fit.

The greatest show of Diablo's loyalty to Rimuru was recruiting hundreds of other demons (including the last three progenitors) to serve his master; the creation of the Black Numbers, who became the de facto strongest fighting force in Tempest.

Backstory
Thought of as strange by the other Primordials, Noir only acted on whims and didn't show any regular behavior, to the irritation of some of the other Primordials. Due to that he one day stopped pursuing power as his power efficiency became so high that any fights were too easy for him, causing him to remain as an Arch Demon despite having enough power to evolve into a Demon Peer already.

One day when he personally answered a Demon Summon of a Silver Wing on a whim, he had a chance encounter with Shizue Izawa. During a confrontation, where Noir was about to finish her off, he was repelled by Shizue's Anti-Magic Mask instead, making Noir realize that the mask can has the power to surpass time or the power of infinity. After those events, he returned to the Spiritual World and continued observing Shizue and the mask in secret. When he saw that the mask broke and lost its power when the mask came into Rimuru's hands, Noir came to the conclusion that Rimuru is connected to that power of the mask that surpasses time itself as he witnessed and that Rimuru is, therefore, the key to the "truth of the world."

He tried to get summoned by Rimuru when Rimuru made a Greater demon summoning within Ramiris Labyrinth, but he failed and Beretta of his own line of Demons, answered the Summon first, to Noir's chagrin.

Finally, when Rimuru did another Greater demon summoning to catch the hiding Razen, Noir managed to answer the call alongside two of his Greater Demon followers. After some further events, Noir finally received the Name "Diablo" from Rimuru and evolved into a Demon peer

Noir v/s Shizue Izawa - Retreat
One day when he personally answered a Demon Summon of a Silver Wing on a whim, he had a chance encounter with Shizue Izawa. Shizue figured out that something was wrong with the man in robes and that he had the plan to kill everyone in the castle just for finding a demon. This caused Noir and Shizue to battle. Noir seemed to play around with Shizue during the battle but in the end, Noir got somewhat of a severe injury from Shizue's Anti-Magic mask and had to retreat.



Noir v/s Named Arch-demon - Victory


The demon in the castle took interest in Shizue and her mask and he personally went to meet Shizue to tell her that King wanted to meet her.

The demon guided Shizue Izawa to a trap to kill Shizue, she was exhausted from her fight with Noir and couldn't put much of a fight against the Arch-demon and as she was going to let Ifrit rampage as a last desperate attempt but Noir showed up and proceeded to kill the demon easily.

Noir v/s Razen - Victory


Rimuru did a Greater demon summoning during his harvest festival as he was going to sleep.By offering the soul-less corpses of the 20,000 Farmus soldiers, Rimuru successfully summoned Noir and his two Greater Daemon subordinates. Using the corpses, they were able to successfully materialize and Rimuru's first order for them was to capture the hiding Razen and bring him to Ranga. Mesmerized by Rimuru's Soul the three Daemons did their work promptly, successfully capturing Razen alive.

Razen underestimated Noir as a Greater demon because he came out of a Greater demon summoning and he proceeded to fight against Noir using martial arts and with his new body. Whatever Razen did had no effect on Noir, Razen even fired a nuclear canon and Noir deflected it like it was nothing. In the end, Razen realized that Noir was the black primordial and got frightened and cursed Rimuru for unleashing such a demon into this world.

Diablo v/s Demon slayers - Victory
""“Ara Ara, what’s wrong? Don’t you want to have some fun after passing my test? Don’t you want to find out? You will know whether I was bluffing or not when you experience it for yourself.”"."

- Diablo

Damrada left Edward with a few demon slayers from the eastern empire to subjugate the demon (diablo) and these demon slayers eventually fought with Diablo. The fight was an overwhelming victory for Diablo but he didn't hurt much or kill any of them due to Rimuru's order and Diablo made them lose their will to fight. The demon slayers knew about the dangers of Diablo and were horrified to realize his true identity as a primordial demon and they surrendered. "“Please forgive me and spare my life! I’m just doing this for the money. I won’t dare to stand against you in the future, I swear! I won’t get in the way of your business. I’d even kill the fainted king over there if you so demand! So please, spare me!”."

- Demon slayer

Diablo v/s Sare and Glenda - Victory
""“—True identity, is it? Right, I forgot about it since I’m not interested in power ranking. As you said, I am no Archdemon as you claimed. I’ve evolved to Demon Noble. It is not much different, but I still hope you won’t mistake it.”"."

- Diablo

Sare confronted Diablo and asked him about his true nature and identity, when Diablo revealed that he was a Demon peer, Sare got frightened and lost his will to fight realizing he could never win against Diablo. Glenda took this as a chance and ran away from Diablo, abandoning Sare and Diablo continued to play with Sare for time-pass.

Diablo v/s Seven Celestial Sages - Victory
""Silence! You tried to deceive the great Rimuru-sama. And that crime alone cannot simply be repaid with death. Let me be very clear now, you are not worthy of salvation.” "."

- Diablo The Seven celestial sages showed up while Diablo was playing with Sare and the proceeded to use nuclear strike magic to kill everyone on sight to clear all the evidence. The Seven Celestial Sages framed Diablo for the murder of Archbishop Rayheim and Diablo who realized this didn't hold back and instantly killed them with his Unique skill.

Rimuru Tempest
Noir was given the name " Diablo " from Rimuru and he is loyal to Rimuru to the degree of worshiping Rimuru as his God. Diablo only takes orders from Rimuru and will always carry out Rimuru's order to the best of his abilities

Shizue
One day when he personally answered a Demon Summon of a Silver Wing on a whim, he had a chance encounter with Shizue Izawa. During a confrontation, where Noir was about to finish her off, he was repelled by Shizue's Anti-Magic Mask instead, making Noir realize that the mask can has the power to surpass time or the power of infinity. After those events, he returned to the Spiritual World and continued observing Shizue and the mask in secret. When he saw that the mask broke and lost its power when the mask came into Rimuru's hands, Noir came to the conclusion that Rimuru is connected to that power of the mask that surpasses time itself as he witnessed and that Rimuru is, therefore, the key to the "truth of the world."

Ranga
Diablo respects Ranga as he is serving the same master and he is also grateful for Ranga for reminding Rimuru about the summoned demons since Rimuru forgot that he summoned a Black primordial and gave it a body.

Veldora
Veldora holds high regard for Diablo since Diablo sometimes treates Veldora to sweets and cake.

Shion
His co-worker as secretary to Rimuru. Diablo recognizes Shion as a worthy equal to himself and they hold rivalry towards eachother for serving Rimuru.

Benimaru
Diablo respects Benimaru as he is serving the same master as Diablo.

Guy Crimison
Diablo and Guy were old friends when both of them were in the demon world.

Berretta
Berretta is from Diablo own lineage of demons, that is the black lineage who are all whimsical demons with weird personalities.

Souei
Diablo respects Souei as he is serving the same master as Diablo.

Rigurd
Rigurd is extremely wary of Diablo as he is very smart and powerful. Diablo has tricked Rigurd sometimes just for the benefit of being closer to Rimuru.

Shuna
Diablo respects Shuna as he is serving the same master as Diablo.In some occasions Diablo calls Shuna as Shuna-sama.

Myourmiles
Diablo usually treats him as amiable, though he might still manipulate him for his own ends, with "his own ends" usually referring to being close to Rimuru more often. Diablo made a plan with Myourmiles regarding to salary system in tempest and suceceded in making a reward like "Right to serve Rimuru".

Demon Lord Awakening
By offering the soul-less corpses of the 20,000 Farmus soldiers, Rimuru successfully summoned Noir and his two Greater Daemon subordinates. Using the corpses, they were able to successfully materialize and Rimuru's first order for them was to capture the hiding Razen and bring him to Ranga. Mesmerized by Rimuru's Soul the three Daemons did their work promptly, successfully capturing Razen alive.

When the secret revival art was lacking the necessary energy, Noir offered to sacrifice his subordinates, stating that they were delighted to be of use to Rimuru. Hence, when Rimuru awakened and found out that the Arch Daemon he summoned did his job properly he was grateful for his efforts and allowed Noir to become one of his vassals. When Rimuru found out that the Arch Daemon didn't have a name, he named him "Diablo." After Diablo was named, a black cocoon enveloped his body and the now named Diablo evolved into a Daemon Lord.

Afterwards, Diablo was allowed to attend the meeting to discuss their future plans.

The Octagram Soars Brightly
Diablo was then given the task of investigating Farmus and cripple its economy and overthrow the current Farmas king.

Trivia

 * Rimuru named Diablo after the Supercar.
 * Diablo's naming took half of Rimuru's total magicules reserves even though his total magicule capacity increased by ten times after becoming a demon lord.
 * Diablo is Rimuru's strongest named subordinate.
 * Diablo's happiest thing to do is butler/housekeeping work for Rimuru.
 * Diablo is a loner who doesn't like having subordinates unless it is for the sake of his master.