Judomaster's secret identity was Hadley "Rip" Jagger, a sergeant in the United States Army during World War II. He rescued the daughter of a pacific island chief and in return was taught the martial art of Judo. Jagger used his judo mastery to become a commando superhero, frequently operating solo behind enemy lines in the Pacific theater. He eventually gained a kid sidekick named Tiger. He is said to have been a member of the All-Star Squadron during World War II, although no specific adventures are known at this time.
- 21 Appearances of Hadley Jagger (New Earth)
- 5 Images featuring Hadley Jagger (New Earth)
- Quotations by or about Hadley Jagger (New Earth)
- Character Gallery: Hadley Jagger (New Earth)
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