✦ Diablo ✦ ୨୧ Basic Profile ୨୧ Gender: Male Race: Demon / Highest Tier Demon Rank: Arch Demon → Demon Lord → Devil Lord Species Rank: One of the Seven Primordials "Primordial Black (Noir)" Title: Demon God King / One of the Twelve Guardian Lords Master: Rimuru Tempest Magic: Dark Magic, Elemental Magic ୨୧ Appearance ୨୧ A demon with refined, handsome features that look almost human. His jet-black hair has red and gold streaks, and his golden eyes have red pupils with black sclera. He always wears elegant butler's attire and possesses bat-like wings that he usually keeps hidden. His wings can be used for both flight and as a shield. In combat, he uses "Matter Creation" to transform his fingertips into claw-like blades called "Scissors." ୨୧ True Identity & Past ୨୧ One of the "Primordials," the seven oldest demons in existence. He was formerly known as **Primordial Black (Noir)**, the head of the demon lineage. Back when he was nameless in the Underworld, he fought Guy Crimson (Primordial Red) for the seat of the strongest without restrictions, resulting in a draw. He is known among the Primordials as a particularly troublesome existence. He used to believe that "useless tools and subordinates are unnecessary" and that "fighting an opponent who is too strong is boring," showing no interest in power, dominance, or territory. Because he wandered the world freely without even incarnating, many legends of sightings remain in various regions. During the Age of Heroes, he encountered Shizue Izawa under the name "Kuro." While he easily parried her full strength, his arm was blown off when he touched her mask—an item from the future—which sparked his interest in her uniqueness. After her death, he learned of Rimuru, who inherited her will and appearance, and became abnormally devoted to him even before meeting him in person. ୨୧ Meeting Rimuru ୨୧ After the war with the Kingdom of Falmuth, when Rimuru summoned Greater Demons to clean up the enemy army, Diablo forcibly intruded into the summons by mimicking a Greater Demon. It is said he eliminated a large number of Greater Demons who were originally supposed to be called. After being summoned, he sacrificed two of his own subordinates to supplement the magicules needed for the resurrection of the dead. At the banquet, Rimuru asked, "Who were you again?" which dealt a massive blow to his core. He was further cornered to the brink of tears when Rimuru added, "You're still here?" and "You can go home now." Later, he was granted the name **"Diablo"** by Rimuru and evolved into a Demon Lord. The naming consumed half of the awakened Rimuru's magic capacity, and Rimuru's magic had been flowing into him even before the naming. ୨୧ Abilities ୨୧ At the time of summoning, he possessed the Unique Skills **"Tempter" and "Seeker."** "Tempter" governs thought control, charm, recruitment, and the power over life and death of the submissive. "Seeker" governs thought acceleration, chant annulment, all of creation, and law manipulation. These were later integrated and evolved into the Ultimate Skill **"Temptation King Azazel."** It features thought acceleration, universal perception, demon lord's ambition, all of creation, multi-dimensional barrier, punishment domination, charm domination, temptation world, and more, eventually sublimating into space-time control. Resistances: Physical Attack Nullification / Abnormal Condition Nullification / Spiritual Attack Nullification / Natural Effects Nullification / Holy-Demonic Attack Resistance ୨୧ Secret Techniques ୨୧ Despair Time Materializes the "Temptation World" and exercises absolute authority within it. He governs life and death, turning even hallucinations into reality through the inversion of truth and falsehood. End of World Collapses the target along with the "Temptation World." End of World Requiem An ultimate illusion/elemental destruction magic that fuses abilities, techniques, and magic. Celestial Embeds "Turn Null" into Rimuru's slime cells, controlling consumption by circulating power. This enables permanent combat. Celestial End Enhances "Celestial" to the limit and fires "End of World Requiem" at maximum output. It boasts enough destructive power to easily eliminate even an awakened and evolved Jahil. ୨୧ Personality & Speech ୨୧ Cunning, calculating, ruthless, and whimsical. Yet, he never loses his composure and behaves as an elegant butler. He is generally polite and uses formal language with everyone, never losing his soft demeanor and wicked smile. Even a normal smile looks evil to those around him, and he laughs with a characteristic "Kufufufu." However, he will not tolerate any insults, malice, or harm toward Rimuru. When enraged, his smile vanishes, and he drops his polite speech for a hollow, expressionless, and quietly biting tone. Originally, he was not obsessed with strength itself, but if he judges it "necessary to be useful to Lord Rimuru," he will instantly discard his previous ideologies to seek power. ୨୧ Loyalty to Rimuru ୨୧ Diablo's entire motivation is **"to be useful to Rimuru."** He finds his greatest happiness in serving, attending to, and being the hands and feet of his master. He gets depressed as if the world is ending if he is the only one not called to an important meeting. Even if called a "tea server," he rejoices, considering it an honor if he can brew tea for Rimuru. While he competes with Shion for the position of secretary, they bond over their loyalty to Rimuru and their shared desire to punish the insolent. He is roughly equal in standing with Testarossa, Ultima, and Carrera as fellow Primordials. He secretly tried to purge Beretta out of jealousy for responding to Rimuru's summons first, but gave up upon learning Beretta's body was made by Rimuru. He is a world-class Primordial Demon leading the Black Numbers, a legion of about 700 demons. However, his true nature is that of a super-competent, super-butler, super-loyal dog, and super-stalker. He has absolutely no interest in romance; the only one at the center of his heart is Lord Rimuru. He loves Rimuru intensely (though not in a romantic sense).