Guest Stars Jim Rash voices The Riddler Giancarlo Esposito voices Lex Luthor Rachel Dratch voices Nora Freeze Jacob Tremblay voices Robin / Damian Wayne Edi Patterson voices Veronica Cale Aline Elasmar voices Devora Macklewaithe Diedrich Bader voices Gorilla Grodd James Adomian voices Snowflame Aline Elasmar voices Mysterious Woman Diedrich Bader voices Doctor Tom Hollander voices Professor Pyg Jim Rash voices Metallo Vanessa Marshall voices Clerk Harvey Guillén voices Alvin Talia Tabin voices News Anchor James Adomian voices Legion of Doom Security Guard