Gotham City D.a. Harvey Dent Is Hideously Scarred Down One Side Of His Face, By An Acid Attack. The Result Is 2 Personalities And 2 Faces. Two-face Blames Batman And Goes After Him With Vengeance On His Mind. Two-face Teams Up With Edward Nygma, A Technical Wizard Who Worked For Wayne Enterprises, Invents A Brain-sucking Tv And Adopts The Alto-ego Of The Riddler. Dick Grayson, After Watching His Acrobatic Family Plummet To Their Death, Teams Up With Batman To Become Robin.