WN/Testarossa

'''"You all already understands right? When you passed this line, your lives will forfeit. People who don’t have the resolution mustn’t pass it. Well then, have a good day." '''

- Testarossa warns the invading Imperial army.

Testarossa was a Arch Demon whom had evolved into a Demon Duke after she was named by Rimuru. She is one of the ten demons personally selected by Diablo, whom had summoned various potential candidates to form the members of the Black Corps, an elite demon unit with the lowest number of troops, but with the strongest war force in all of Tempest.

She has been appointed as Diablo’s right hand, and is dispatched to Gobuta's corps as an intelligence officer.

Appearance
Female type demon with scarlet hair. Even as a Greater Demon, he is perceived as a special individual in Rimuru's eye and possessed a dignified presence.

Trivia

 * She was named after Ferrari Testarossa car.