Batman villains The Riddler, The Penguin, and Two-Face by Brian

SECRET ORIGINS SPECIAL #1 (Aug 1989 DC) origin of Penguin, Riddler, Two-Face

From Joker to Riddler: These are the 13 greatest Batman villains ever

List of Batman family enemies - Wikipedia

Penguin - NygmaGaming

Joker (DC Black Label Edition) by Brian Azzarello Trade Paperback DC COMICS

endternet: Dent H.The Killing Joke (1988)Art by Brian

Batman DCU Film Adaptations Should Use The Dark Knight's Underutilized Villains

The Top 100 Comics Of A Lifetime (#55 - 51)

Batman Film Villains List: The Best and Worst