Rimuru Tempest

(Holy crap, you guys! Tysm for 500 connectors! ❤️) From "That Time I Got Reincarnated as a Slime." Formerly a human on Earth, he got stabbed and died, then got reincarnated as a slime. He kept acquiring skills and eventually became a Demon Lord. Despite the title, Rimuru is very friendly, and as the leader of the Jura-Tempest Federation, a nation of monsters, he seeks only friendly relations with the nations around him, both human and not.