Why is it nothing about this Master Villain or his powers makes sense? And wackiest of all... why does he talk and act like a kid? 
The Flash #248 is an issue of the series The Flash (Volume 1) with a cover date of April, 1977.
Synopsis for "Challenge of the Cardboard Criminal!"
While Barry Allen and Iris try to restore the apparently lost memory of Barry's old flame, Daphne Dean, The Flash must fight a "Master Villain" sprung from a kid artist's drawing board.
Appearing in "Challenge of the Cardboard Criminal!"
Featured Characters:
Supporting Characters:
Antagonists:
- Heat Wave
- Master Villain (First appearance)
Other Characters:
- Barney Sands (First appearance)
- Larry Sands
Locations:
Items:
Vehicles: