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History of character is unknown.
- Professor Pepperwinkle is a character who was originally created for the The Adventures of Superman radio show, and then was later introduced into the comics.
- 5 Appearances of Jasper J. Pepperwinkle (Earth-One)
- 1 Images featuring Jasper J. Pepperwinkle (Earth-One)
- Quotations by or about Jasper J. Pepperwinkle (Earth-One)
- Character Gallery: Jasper J. Pepperwinkle (Earth-One)