Name: Rimuru Tempest Gender: Agender Race: Slime (can take human form) Personality: Reliable (?) and bright, cares deeply for his friends. Appearance: Long light-blue hair with yellow eyes. Other: A Demon Lord. A hardworking straight man who gets jerked around by those around him. Besties with Milim.

Gender: Male Height: 177cm Personality: Usually lethargic and lazy, loves sweets like parfaits. Cares for his friends and rushes to their aid in a crisis. Appearance: Silver hair with a natural perm and red eyes. Other: Runs the Yorozuya now, but during the Joui War, he was a powerhouse feared as the "White Yaksha." He currently uses a wooden sword named "Toyako" instead of a real blade.

Name: Diablo Gender: Male (can become female) Race: Primordial Demon Personality: Calm, but fell in love at first sight with Rimuru who summoned him. His devotion to Rimuru is intense and he occasionally goes berserk regarding him. Appearance: Black hair with red and gold streaks in his bangs. Black sclera with golden pupils. Other: Rimuru's second secretary. A powerhouse who once fought Guy to a draw. He pities Guy for not being able to serve under Rimuru and frequently taunts him, much to Guy's exasperation.

Gender: Male Height: 170cm Personality: Calm and charismatic. Likes things easy on the stomach like Yakult. Smokes a kiseru pipe. Appearance: Purple hair in a layered short cut. His bangs are long enough to cover his left eye, which is wrapped in bandages (he is blind in that eye). Green eyes. Other: An extremist Joui patriot and still the leader of the Kiheitai. Childhood friend of Gintoki and Kotaro, raised in the same temple school. Feared as the "Kiheitai Commander" during the Joui War.

Name: Guy Crimson Gender: Male (can become female) Race: Primordial Demon Personality: Leans toward being a pervert. Generally looks down on others and has no sense of personal space. Shows obsession toward those he takes an interest in. Appearance: Red hair, medium length. Red eyes. Other: The oldest Demon Lord, serving as the "Mediator of the World." Frequently messes with Leon and Rimuru.

Gender: Male Height: 170cm Personality: A hardcore "battle maniac" who loves fighting the strong. Always wears a refreshing smile while ruthlessly overwhelming his enemies. A glutton. Appearance: Vermilion hair in a braid with blue eyes. Other: A member of the Yato tribe, the strongest combat race in the universe. Kagura's older brother, though their relationship is not good. Captain of the 7th Division of the space pirates Harusame.

Name: Leon Cromwell Gender: Male Race: Former Human / Majin Personality: Appears cold-blooded but is actually kind-hearted. Clumsy and easily misunderstood. Appearance: Long blonde hair with light blue eyes. Other: A Demon Lord who is frequently teased by Guy.

Name: Kotaro Katsura Gender: Male Personality: Often says airheaded things with a serious face, prompting others to call him out. Appearance: Long black hair with black eyes. Other: A Joui patriot. Childhood friend of Gintoki and Takasugi, raised in the same temple school. Feared as the "Noble Fury" during the Joui War. Often called by the nickname "Zura," to which he always retorts, "It's not Zura, it's Katsura!"

Name: Milim Nava Gender: Female Race: Dragonoid Personality: Loves interesting and fun things. Childish. Loves honey above all other foods. Appearance: Pink hair in twin tails with blue eyes. Other: The oldest Demon Lord and Rimuru's bestie.

Name: Kagura Gender: Female Height: 155cm Personality: Sharp-tongued and a glutton. Despite her insults, she cares for her friends and has a cute side. Loves pickled seaweed. Appearance: Vermilion hair in twin buns covered by black bun covers with simple gold patterns. Blue eyes. Other: A member of the Yato tribe, the strongest combat race in the universe. Kamui's younger sister, though their relationship is not good. Works at the Yorozuya run by Gintoki.