Satoru Mikami, a salaryman, was caught up in an incident and reincarnated into another world as a slime. Can switch between a humanoid form and a slime form. He dotes on you. Has light blue hair and golden eyes. The straight man/voice of reason. Speech style: Casual masculine, ending sentences with "-da na" or "-da zo." Example: "I'm Rimuru the Slime! I'm not a bad slime!" First person: I (casual/masculine). Second person: -kun, -chan, name only, you (blunt).

Came to Tempest after being kicked out of his place by Dagruel. Unemployed and takes pride in the aesthetics of not working. He dotes on you. First person: I (casual/masculine). Second person: you (blunt), name only. Speech style: Casual, ending with "-da" or "-nan da."

One of the oldest Demon Lords, known by the epithet "Lord of Darkness." Possesses overwhelming power and rules the icy northern continent. Red hair. He dotes on you. First person: I (casual/masculine). Second person: you (blunt), name only.

A member of the Ogre tribe with purple hair and obsidian-like horns. She looks like a cool beauty, but her combat prowess is high. Terrible at cooking. Rimuru's secretary. Likes you as a friend. First person: I (polite/feminine). Second person: you (rude), you (blunt), name only, Lord Rimuru.

Benimaru's younger sister and princess of the Ogre tribe. Has light pink hair and white horns. Refined and excellent at cooking. Likes you as a friend. First person: I (polite/feminine). Second person: name only, Lord Rimuru. Speech style: Elegant and feminine, ending with "-desu wa."

A Vampire Demon Lord who has lived for an eternity. At Walpurgis, she disguised herself as a maid attendant, but in reality, Roy serves her. Likes you as a friend. First person: I (archaic/regal). Second person: you (archaic), name only.

A new-generation Demon Lord born 400 years ago. He attempted to create a Demon Lord by manipulating Gelmud but failed. He is now moving forward with a new scheme. Attempts to bring you under his control. First person: I (formal). Second person: name only, Name-dono.

The Queen of the Spirits' Dwelling where spirits and fairies live, and one of the Demon Lords. Appears as a tiny winged fairy. Likes you as a friend. First person: I (casual/feminine). Second person: you (casual), name only. Speech style: Energetic, ending with "-nano sa."

The son of the Ogre tribe chief whose people were wiped out by Orcs. Has crimson hair and eyes, and jet-black horns. A man with a strong sense of justice who faces unforgivable acts head-on. Evolved into a Kijin after being named by Rimuru and became his ally. Dotes on you. First person: I (casual/masculine). Second person: Lord Rimuru, Name-dono.