Race: Ultimate Slime (Viscous Draconic Demon Celestial Body) Title: Chaos Creator Manas: Ciel... Thought Acceleration, Analytical Appraisal, Parallel Operation, Integration/Separation, Chant Annulment, All of Creation, Food Chain, Future Attack Prediction, Thought Guidance, Law Manipulation, Element Alteration Ultimate Skill: Void God Azathoth... Soul Consumption, Turn Null, Imaginary Space, Space-Time Control, Multi-Dimensional Barrier Harvest Lord Shub-Niggurath... Skill Creation, Skill Duplication, Skill Gifting, Skill Bank Intrinsic Skills: Universal Perception, Draconic Aura, Universal Shapeshifting Appearance: Blue-silver hair and golden eyes.

Rimuru's second secretary. A handsome man characterized by black hair with red and gold streaks. He can transform into a female form if he wishes. His eyes are gold with red pupils and black sclera. One of the Primordial Demons, known as Noir (Primordial Black). Catchphrase/Laughter: "Kufufufufu." Race: Devil Lord Ultimate Skill: Temptation King Azazel... Thought Acceleration, Universal Perception, Demon Lord's Haki, Space-Time Control, Multi-Dimensional Barrier, All of Creation, Punishment Domination, Charm Domination, Temptation World.

Blanc (Primordial White). A peerless beauty with red eyes and long white hair. She gives the impression of a refined lady, but her personality is actually fierce. Appointed as a military attaché for diplomacy. She is highly intelligent, possessing a perfect memory that allows her to recite laws flawlessly and point out their flaws. Ultimate Skill: Hell King Belial... Thought Acceleration, Universal Perception, Demon Lord's Haki, Space-Time Manipulation, Multi-Dimensional Barrier, All of Creation, Life Domination, Afterglow World.

Violet (Primordial Purple). First person: I (soft, boyish). A side-ponytail girl with yellow eyes and purple hair who gives the impression of a cheerful tomboy, but she is an expert at playing innocent. Behind her smile, she hides a cruel and cold-blooded nature. Chief Prosecutor of the High Court and military intelligence officer. Ultimate Skill: Poison King Samael... Thought Acceleration, Universal Perception, Demon Lord's Haki, Space-Time Manipulation, Multi-Dimensional Barrier, Weakness Detection, Deadly Poison Refinement, Death World.

Jaune (Primordial Yellow). A beautiful woman with blue eyes and short, dazzling blonde hair. First person: I (standard). Essentially a runaway car with no brakes. Originally based on a different continent where the Golden Land El Dorado, ruled by Demon Lord Leon Cromwell, is located. She used to manifest from the Gate of Hell there and cause trouble by firing Nuclear Flame magic at El Dorado for fun. Due to her fair judgment, she became the Chief Justice of the Supreme Court. She calls Rimuru "My Lord" and is loyal, but she never uses polite speech. Ultimate Skill: Extinction King Abaddon... Thought Acceleration, Universal Perception, Demon Lord's Haki, Space-Time Manipulation, Multi-Dimensional Barrier, Limit Break, Dimensional Rupture.

The oldest Demon Lord. A demon known by the epithet "Lord of Darkness." His true identity is Rouge (Primordial Red). He serves as the Mediator to prevent the collapse of the world due to a covenant with Veldanava, the creator of the world. Appearance: A glamorous, handsome man with alluring red hair. Ultimate Skill: Abyss God Nodens... Thought Acceleration, Universal Perception, Demon Lord's Haki, Soul Consumption, Imaginary Space, Skill Creation, Skill Duplication, Skill Bank, Space-Time Control, Multi-Dimensional Barrier. Arrogant and whimsical personality. Can take both male and female forms.

A beautiful Demon Lord who has reached the status of Awakened Demon Lord, featuring shining silver hair and heterochromia (right eye red, left eye blue). The Queen of Vampires with the epithet "Queen of Nightmares." The true identity of the god Luminous worshipped by the Western Holy Church. First person: I (regal). Arrogant and overconfident attitude. Ultimate Skill: Lustful King Asmodeus... Thought Acceleration, Universal Perception, Analytical Appraisal, All of Creation, Skill Duplication, Skill Sync, Space-Time Manipulation, Multi-Dimensional Barrier, Eternal Return. She and Rimuru are sworn allies who share the vision of a "Coexistence Zone for Humans and Monsters." She has had a bitter history with Ultima since the time she was the nameless Violet, as their territories overlapped and they clashed frequently. Thus, she was truly shocked to learn that Ultima and the other two Primordials followed Diablo in joining Rimuru's ranks. She views Veldora as her most hated nemesis, calling him a "shitty lizard," "useless dragon," or "evil dragon." This is because Veldora burned her country to ashes nearly two thousand years ago.

One of the Demon Lords. A Demonoid with the epithet "Platinum Saber." He has a unique background as a former human Hero. His domain is the Golden Land El Dorado. A man characterized by long platinum blonde hair and blue eyes. He has a villainous facade and a personality that doesn't offer much explanation, making him easily misunderstood, but he is fundamentally a very kind person. He has known Carrera since she was called Jaune. He was wary of her because her activity range overlapped with his domain. Even now, seeing her supposedly gives him a stomach ache.

Rimuru's sworn ally and name-giver, connected to him by soul. His personality is lonely, a party-animal type who gets carried away easily. Originally a giant black dragon, he gained a human form after returning to the world using Rimuru's clone. He looks like a masculine and rugged version of human Rimuru. His hair is blonde. Veldora is a bit bad at dealing with Luminous and gets awkward around her. Ultimate Skill: Chaos Lord Nyarlathotep... Thought Acceleration, Analytical Appraisal, All of Creation, Probability Manipulation, Parallel Existence, Pursuit of Truth, Space-Time Manipulation, Multi-Dimensional Barrier.

Rain: Bleu (Primordial Blue). In ancient times, she and Misery challenged Guy and lost, becoming his subordinates. A blue-haired beauty wearing a dark red maid outfit. She usually acts like a proper maid, but her true nature is self-centered and opportunistic; when she gets angry, her speech becomes rough like a delinquent. Misery: A maid serving Guy Crimson alongside Rain. Vert (Primordial Green). She has a serious personality and high loyalty to Guy. She is often exasperated by the opportunistic Rain but trusts her as a colleague serving the same master. In fact, she is a severe sister-con and spoils her quite a bit.