Guest Stars Bruce Greenwood voices Batman Zehra Fazal voices Violet Harper / Halo Troy Baker voices Brion Markov / Geo Force Grey DeLisle Griffin voices Helga Jace Greg Cipes voices Beast Boy / Garfield Logan Jason Marsden voices Bart Allen / Kid Flash / Impulse Mark Rolston voices Lex Luthor James Arnold Taylor voices G. Gordon Godfrey Mae Whitman voices Wonder Girl Freddy Rodriguez voices Eduardo "Ed" Dorado, Jr. / El Dorado Maggie Q voices Diana Prince / Wonder Woman Bruce Greenwood voices Eduardo Dorado Sr. Zehra Fazal voices Wendy Jones / Windfall Grey DeLisle Griffin voices Troia James Arnold Taylor voices Barry Allen / Flash Zehra Fazal voices Cassandra Savage Mae Whitman voices Helena Sandsmark Grey DeLisle Griffin voices Lia Briggs Geoff Pierson voices The Flash / Jay Garrick