Smirk is the right hand of the J-Man in DCAU animated universe. 

One night, Smirk was with his boss and the other Jokerz members when they caused trouble near a nightclub. Terry managed to fight them off but drove away from them to Wayne Mansion via motorcycle.

When they cornered Terry, Smirk suggested that they "put a smile on his face." But before they could. Bruce Wayne interfered and fought against Smirk and the other Jokerz with Terry. 

Smirk also makes other appearances within the show.