Testarossa

テスタロッサ

Testarossa, the White Primordial, was an Arch Demon that was recruited by Diablo along with Carerra and Ultima to serve Rimuru. After being named, she evolved into a Demon Peer. She now serves as Tempest's Military Attaché, a representative for the Western States Council. Following the battle with the Empire she awakened as a True Demon Lord.