Guest Stars Zehra Fazal voices Violet Harper / Halo Troy Baker voices Brion Markov / Geo Force David Kaye voices Vandal Savage Jason Spisak voices Forager / Fred Bugg Tara Strong voices Tara Markov / Terra Nolan North voices Superman / Clark Kent Deborah Strang voices Gretchen Goode / Granny Goodness Troy Baker voices Green Lantern / Guy Gardner Jason Spisak voices Kid Flash / Wally West David Kaye voices Elongated Man / Ralph Dibny David Kaye voices Kirby Jacobs