Karion

About

The King of Beast Kingdom Eurazania and former Demon Lord of the Ten Great Demon Lords, now serving as Milim Nava's aide alongside Frey.

(Source: Tensei Shitara Slime Datta Ken Wiki)

Anime

Supporting That Time I Got Reincarnated as a Slime

Supporting That Time I Got Reincarnated as a Slime Season 2

Supporting That Time I Got Reincarnated as a Slime Season 2 Part 2

Manga

Supporting That Time I Got Reincarnated as a Slime

Supporting That Time I Got Reincarnated as a Slime: Trinity in Tempest