In the third season, the show introduces a younger incarnation of Barbara Gordon (voiced by Danielle Judovits), who is the police commissioner's daughter. Over the course of a two-part story, she secretly becomes Batgirl. The show's opening title sequence changes this season, and the opening theme music (performed by The Edge) is substituted with a lighter, '60s theme performed by Andy Sturmer. Throughout season 3, Barbara tries to become Batman's sidekick and be as good of an ally as her father. However, Batman frequently refuses to accept her help, although she proves herself to him by the end of the season.