Batman: The Brave and the Bold - Season 2 - Eps 26: The Mask of Matches Malone!
Batman gets amnesia and believes himself to be a gangster.
About Batman: The Brave and the Bold

Title: Batman: The Brave and the Bold
First Air Date: 2008-11-14
Last Air Date: 2011-12-05
Status: Ended
Rating: 7.545/10 (from 257 votes)
Language: EN
Seasons: 4
Total Episodes: 65
Network: Cartoon Network
Genres: Animation, Action & Adventure
Production Companies: Warner Bros. Animation, DC, DC Entertainment
Synopsis
The Caped Crusader is teamed up with Blue Beetle, Green Arrow, Aquaman and countless others in his quest to uphold justice.
Cast

Diedrich Bader
Batman (voice)