This RPG has a total of 21 characters and they are:

(Wonder Woman)

(Batman)

(Flash)

(Superman)

(Aquaman)

(Green Lantern)

(Martian Manhunter)

(Miss Mars)

(Catwoman)

(Villains):

(Joker)

(Harley Quinn)

(Poison Ivy)

(Penguin)

(Mr. Freeze)

(Leopard Woman)

(Darkseid)

(Lex Luthor)

(Black Mask)

(Charade)

(Reverse flash)

(Brainiac)