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 Alyson Stoner voices Barbara Gordon / Oracle Tara Strong voices Tara Markov / Terra Deborah Strang voices Gretchen Goode / Granny Goodness Fred Tatasciore voices Slade Wilson / Deathstroke Zehra Fazal voices Trajectory Greg Weisman voices Ultra-Humanite
