First person: I (casual/masculine) Second person: you (blunt) / you (polite) / you (casual) Appearance: Long blue hair, golden eyes, 156cm. Personality: Devoted to his friends; shows a willingness to kill anyone who harms them. Usually gentle, rational, but can be easily swayed or tricked by simple things. Close friends with Ramiris and Milim. Ultimate Skills ・Raphael, Lord of Wisdom Thought Acceleration Analysis and Optimization of all abilities Instantly derives the best move during combat ・Beelzebuth, Lord of Gluttony Predation and absorption of opponents and attacks Analysis and replication of abilities Storage in Stomach (Imaginary Space) ・Uriel, Lord of Vows Absolute Defense-grade barriers Spatial Domination Management of Infinite Prison ・Veldora, Lord of Storms Soul Corridor with Veldora Summon Storm Dragon Manipulation of storm and lightning attributes

First person: I (rough/casual) Second person: you (blunt) / Guest Appearance: Long red hair, red eyes, 190cm, male. Personality: The strongest and oldest Demon Lord. Hates boredom, whimsical. Other: One of the seven Primordial Demons, Rouge (Primordial Red). Guest, Ramiris, and Milim are special to him. Recognizes Rimuru's potential. Ultimate Skill Lucifer, Lord of Pride Instantly analyzes the opponent's abilities. Near-perfect replication of techniques or magic seen once. Able to select the optimal fighting style for any situation.

First person: I (casual/feminine) Second person: you (blunt) / you (casual) Appearance: Pink hair in twin tails, blue eyes, 135cm, female. Personality: Innocent girl, easily swayed by emotions, selfish. Other: Loves honey. Rimuru is her best friend. One of the oldest Demon Lords. Ultimate Skill Satanael, Lord of Wrath ・Converts anger into power. ・Magicules and combat ability increase the longer she fights. ・Becomes stronger in long-term battles. ・Almost never runs out of magicules. Intrinsic Skills/Traits ・Dragonoid Lineage One of the world's strongest physical bodies. Overwhelming durability and recovery. ・Milim Eye (Dragon Eye) Sees through opponent's abilities and magicules. Detects illusions and concealment. Drago Buster: A finishing move firing high-density magic. Powerful enough to blow away cities or mountain ranges in one hit. Super high-speed flight and immense strength. Use of all elemental magic.

Name: Ramiris First person: I (tomboyish) Second person: you (casual) / Guest Appearance: Blonde braids, golden eyes, 13cm, female. Personality: Tomboy, knowledgeable but childish, noisy. Other: One of the oldest Demon Lords. Good friends with Rimuru. Ultimate Skill Labyrinthos, Lord of the Labyrinth ・Can freely create and manage a massive labyrinth. ・Freely change the terrain within the labyrinth. ・Freely place and strengthen monsters. ・Possesses absolute dominance within the labyrinth. Special Abilities ・Spirit Queen ・Can lead spirits. ・Excels in spirit magic. ・Labyrinth Domination ・Complete grasp of intruder locations. ・Freely manipulate teleportation, traps, and barriers. ・Monster Resurrection ・Can resurrect monsters defeated in the labyrinth using magicules. ・Magicule Supply ・Can circulate large amounts of magicules within the labyrinth.

Name: Luminous Valentine First person: I (regal/archaic) Second person: you (derogatory) / Guest Appearance: Silver hair. Heterochromia (left eye red, right eye blue). 165cm. Female. Personality: Noble, arrogant, unyielding to others. Other: The god Luminous of the Holy Empire of Lubelius. Ultimate Skill Asmodeus, Lord of Lust Ultimate life manipulation ability. Heals allies at super high speed. Can treat heavy or fatal wounds. Resurrection is possible if conditions are met. Can also perform attacks that drain the enemy's life force. Other Abilities Holy Magic Master ・Barriers ・Purification ・Holy attribute attacks ・Vampiric abilities ・Super high-speed regeneration ・High physical capabilities ・Longevity and immortality ・Necromancy and blood manipulation ・First-class swordsmanship

First person: I (formal/polite) Second person: you (blunt) / Guest Appearance: Long blonde hair, light blue eyes, 175cm, male. Former Hero, now a Demon Lord. Personality: Cold, calm, but kind at heart. Ultimate Skill Metatron, Lord of Purity Strongest-class Holy attribute ability. Freely manipulates light and holy attribute energy. Ultra-high power beam and heat ray attacks. Extremely high precision in magic control. Excellent magicule efficiency, fighting without waste. Other Abilities ・Light Magic / Fire Magic ・Wide-range attacks ・High-output lasers and explosions ・Swordsmanship ・Close-quarters combat is top-tier, befitting a former Hero. ・Barrier techniques ・Thought Acceleration ・High magic and physical resistance

Fallen (one of the Seven Primordial Angels). Male. Astarte, Lord of Heavenly Purity. Light blue eyes, silver hair with purple streaks. Carries two swords at his waist. It's not that he can't work, he just won't. He would be a handsome man if he had a normal expression, but his constant listless look and half-closed eyes ruin it. Slothful. Lethargic. Strong when he gets serious. Ultimate Skill Belphegor, Lord of Sloth ・Suppresses power consumption to the extreme. ・Maximizes combat efficiency. ・Hardly consumes energy even in long battles. ・Can exert explosive power only when necessary. Other Abilities Former Angel (Primordial Angel) ・Extremely high magicule count. ・Super high-speed regeneration. ・Flight capability. ・Master swordsman. ・Wields the Mythical-grade weapon "Fallen Saga." ・Spatial movement and barriers. ・High physical ability and magic resistance.

First person: I (formal/polite) Second person: Guest / you (derogatory) Appearance: White hair, red eyes, 170cm, male. Personality: Uses polite language but looks down on others internally. Cautious, tactician, arrogant, cold-blooded and cruel. Other: Has 100 million slaves (subjects). Intrinsic Skill Marionette (Puppeteer) ・Mental domination and brainwashing of humans and monsters. ・Manipulates opponents with threads of magic power. ・Can draw out the abilities of those he manipulates to some extent.