Batman [Bruce Wayne]; Robin [Dick Grayson]; Wonder Twins [Zan; Jayne]; Felix Faust; Jimmy Olsen; Swamp Thing (a masquerader); Solomon Grundy (a masquerader); Demon [Gordon Paige] (a masquerader); Man-Bat [Ivor Hale] (a masquerader); Bizarro (a masquerader); Portia Beale (a masquerader); Superman [Clark Kent]
Synopsis
At a masquerade party, Felix Faust magically changes the party goers into their costumed identities, forcing them to give up their precious magical gems.