
Quick answer — Yutaka Nakano voices Bob in Cowboy Bebop: The Movie - Knockin' on Heaven's Door, Hiroshige Kunimoto in Ace of the Diamond act II, Ishikawa in Ghost in the Shell and 17 more characters.
Yutaka Nakano voices Bob (Cowboy Bebop: The Movie - Knockin' on Heaven's Door), Hiroshige Kunimoto (Ace of the Diamond act II), Ishikawa (Ghost in the Shell), Itsutsuko no Sofu (The Quintessential Quintuplets 2), Aultcray Melromarc XXXII (The Rising of the Shield Hero), Darenzo (Lupin the Third: The Woman Called Fujiko Mine), Yukinori Shinohara (Tokyo Ghoul), Metako (The Demon Girl Next Door) and 12 more.
Bob is voiced in Japanese by Yutaka Nakano.