Shūfūn Akikaze

Shūfūn Akikaze (しゅう ふうん あきかぜ, shuu fuun akikaze; Jap Lit Translation, "Master of Fate, Autumn Breeze,") is the Executive Captain over the Zero Division, better known as the Royal Guard. He's regarded as the strongest, and most terrifying member of the organization, having rarely seen action due to his destructive wake he leaves behind within the aftermath of his "conflicts" with others.

He's also the one who "tested" Furuidenshō to see if he really was "Head Captain material" despite it being unnecessary. The aftermath was the Cracked Valley becoming known as the Pit of Despair due to the large blast radius they both created in their colliding attacks and powers, levelling the entire cracked Valley all-together.