
Quick answer — Bon Ishihara voices Kouchou in Daily Lives of High School Boys, Souichirou Shimogamo in The Eccentric Family, Chourou in Star☆Twinkle Precure and 4 more characters.
Bon Ishihara voices Kouchou (Daily Lives of High School Boys), Souichirou Shimogamo (The Eccentric Family), Chourou (Star☆Twinkle Precure), Alexander Bucock (Legend of the Galactic Heroes: Die Neue These), Woodney (Black Cat), Comte de Guercy (Le Chevalier D'Eon), Azami Ou (Suppose a Kid from the Last Dungeon Boonies moved to a starter town?).
Kouchou is voiced in Japanese by Bon Ishihara.