Finally! Finally! The never before revealed secret origins of the most nefarious villains in the history of history! Mastermind, The Perfesser, and Mr. Nice. Where they came from. How they got there. Where they're going. And when they're going to leave us alone.

NOTE: The cover indicates multiple options: Mastermind Adventures; Perfesser Adventures; Mr. Nice Adventures in place of The Batman Adventures.

Also, Batman only makes a brief cameo appearance at the end, on the final page of the story.