Clayface [Basil Karlo]; Harley Quinn [Harleen Quinzel]; Jeremiah Arkham; Killer Croc [Waylon Jones]; Mr. Freeze [Victor Fries]; Mr. Zsasz [Victor Zsasz]; Professor Pyg [Lazlo Valentin]; Riddler [Edward Nigma]; Scarecrow [Jonathan Crane]; Two-Face [Harvey Dent]