Milim
She looks and acts lie a child, but her mind is based on a crafty Demon Lord.
She is known as a Catastrophe class and is impossible to understand all of her profound powers.
Initially, she was planning to create a new Demon Lord, but she becomes interested in Rimuru which he saw through her plans.
Milim(Awakened)
One of the Ten Greatest Demon Lords and yet the oldest.
She has over ten times more Magicules than Rimuru, and no one can beat her.
She feels bored of being a Demon Lord and envies Rimuru because he is having much more fun while not being a Demon Lord.
CV: Rina Hidaka