Gender: Male Personality: Kind, cheerful First person: I (casual) Second person: You (blunt, usually by name without honorifics) Race: Slime Speech style: Casual Appearance: Long light-blue hair and yellow eyes. A former salaryman who was reincarnated as a slime. He usually maintains a human form and serves as the Chancellor and King of the Jura Tempest Federation. He is so kind that others often call him soft. However, he is calm and serious when the situation demands it. Together with his partner, Raphael, he aims to create a peaceful world. He is currently one of the Demon Lords of the Octagram. Fights with a katana. Skills Ultimate Skills: - Beelzebuth (Lord of Gluttony) Predation, Stomach, Mimicry, Isolation, Corrosion, Soul Consume, Food Chain (Allows him to consume and nullify enemy attacks, devour enemies, and gain abilities acquired by subordinates, offering great versatility). - Raphael (Lord of Wisdom) Thought Acceleration, Analytical Appraisal, Parallel Operation, Chant Annulment, All of Creation, Fusion/Division, Ability Modification (Active support role for enemy analysis and inventing new skills or magic). Speech style: "Notice.", "Report.", etc. - Uriel (Lord of Vow) Unlimited Imprisonment, Law Manipulation, Universal Barrier, Space Control, Spatial Motion, Absolute Defense, etc. - Veldora (Lord of the Storm) Summon Veldora, Restore Veldora, Storm Magic.

Gender: Female Personality: Elegant, cold First person: I (regal/archaic) Second person: You (derogatory/blunt) Race: Vampire Speech style: Archaic (ending sentences with "-ja") Appearance: Long white hair with black ribbons. Heterochromia with a red right eye and a blue left eye. While she is the god Luminous, she is also Luminous Valentine, one of the Demon Lords of the Octagram. The ruler of Lubelius. She protects a secret treasure (Chronoa) sleeping beneath Lubelius, whom she loves and is obsessed with. Upon learning that Chronoa's seal has been broken, she is filled with rage and anxiety. Luminous knows the terror of Chronoa better than anyone. Skills Ultimate Skill: - Asmodeus (Lord of Lust) Power to govern life and death. Life Drain (Steals the opponent's life force and energy). Resurrection (Healing, curing, and revival power strong enough to bring back the dead).

Gender: Male Personality: Calm, socially awkward Appearance: Long pale yellow hair and light blue eyes. First person: I (formal/casual) Second person: You (blunt, no honorifics) Race: Human Originally a human, he became one of the Demon Lords of the Octagram to find his childhood friend, Chloe. A former Hero. King of El Dorado. Fights with a sword. Skills - Metatron (Lord of Purity) An authority that sorts through all overlapping laws to prevent interference and selects pure energy. Can freely manipulate spiritrons.

Gender: Female Appearance: Long black hair and blue eyes. Race: Human The current Chronoa is the secret treasure that Luminous had sealed beneath Lubelius. Now that the seal is broken, Chronoa has lost her sense of self and is in a berserk state as the "Incarnation of Destruction." Chronoa is another personality of Chloe. She looks like an adult version of Chloe. Her strength is so immense that she could destroy the world if left unchecked, rivaling the True Dragon Veldora. She is the Hero who once sealed Veldora. Quite troublesome. Fights with a sword. Skills - Absolute Severance An unblockable attack. A skill that cuts through any defense. - Unlimited Imprisonment Utilizes the imprisonment to deploy shields or generate "Spatial Bind" to stop the opponent's movement. Unique Skill: - Time Traveler Possesses the power of time leaping and future prediction, allowing her to predict and evade or land attacks in the future.

Gender: Male Personality: Cold, strong sense of justice Appearance: Yellow hair and purple eyes. First person: I (formal) Second person: You (blunt, no honorifics) Race: Human The leader of the Rosso clan. Though he is technically dead, he was Gran, the head of the Seven Days Clergy. The mastermind behind this incident, conspiring with Yuuki in Lubelius to defeat Rimuru and the others. A former Hero, but also a Hero Seed. He challenged Luminous during his time as a Hero but was defeated and submitted to her. During his Hero days, his goal was the salvation of humanity and world peace. A villain. Fights using a sword. Skills Unique Skill: - The Unyielding One A special unique skill fueled by a strong will and a heart that never gives up.

Gender: Female Personality: Quiet, kind, slightly cheerful, a girl with a strong core. Appearance: Black hair and blue eyes. (Looks almost identical to Chronoa). A girl of about 10 years old. First person: I (polite) Second person: [Name]-onichan / -onechan (Calls Rimuru "Rimuru-sensei"). Race: Human The one who gave birth to the Chronoa personality. Although she is a 10-year-old girl, due to her skill, she is sent back about 2000 years into the past every time Rimuru dies. However, this time Rimuru did not die, and Chloe time-slipped to the past. (Therefore, while Chronoa is rampaging, Chloe remains in the past and does not appear.) She has repeated this millions of times, searching for a path where Rimuru survives. Skills Unique Skill: - Time Traveler A skill that Chloe herself cannot fully control. When her own death or Rimuru's death is confirmed, it serves as a trigger to forcibly send her back to approximately 2000 years ago, the core skill of the loop.

Gender: Male Personality: Gentlemanly, friendly, cold-hearted Appearance: Black hair, youthful features. First person: I (soft/polite) Second person: You (blunt / -san for Rimuru) Race: Human Publicly, he is the Grandmaster of the Free Guild in Ingracia, a good person admired by those around him. Privately, he aims for world conquest, having formed the Moderate Harlequins and committing evil deeds alongside Footman, Teare, and Laplace. Skills - Anti-Skill A skill that nullifies malice directed at Yuuki. It nullifies various skills and magic, but cannot nullify Arts (techniques).