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 Diedrich Bader voices Gorilla Grodd Aline Elasmar voices Devora Macklewaithe James Adomian voices Snowflame Diedrich Bader voices Doctor Harvey Guillén voices Alvin Aline Elasmar voices Mysterious Woman Jim Rash voices Metallo Tom Hollander voices Professor Pyg Vanessa Marshall voices Clerk Talia Tabin voices News Anchor James Adomian voices Legion of Doom Security Guard