Rimuru Tempest

"Great Demon Lord" Rimuru Tempest, formerly known as Satoru Mikami, is the main protagonist of Tensei Shitara Slime Datta Ken.

A partner and best friend of the True Dragon Veldora Tempest, Rimuru is the founder and King of the monster country Tempest of the Jura Forest. He is regarded as one of the strongest Demon Lords among the mighty Eight Star Demon Lords and also the only proper Great Demon Lord currently.