Judomaster
A Charlton Comics super hero created in 1965 by writer Joe Gill & artist Frank McLaughlin in Special War Series #4 [1][2].
Charlton Comics
Judomaster's secret identity was Hadley "Rip" Jagger, a sergeant in World War 2 the United States Army. He rescued the daughter of a pacific island chief and in return was taught the martial art of Judo. He had a kid sidekick named Tiger. In the Nightshade backup series in Captain Atom, an adult Tiger is shown to be Nightshade's martial arts instructor.
Judomaster's title lasted from #89 to #98, from 1966-67. (It was a retitling of a Charlton Western comic.
DC Comics
Along with most Charlton super hero characters his rights were sold to DC Comics. He was made a member of the All-Star Squadron, DC's team of superheroes during World War II. His kid sidekick, Tiger, would later became the villain Avatar in the L.A.W. comic by DC Comics which re-teamed all the Charlton characters they bought. He has since only appeared a few times.
A female version was seen in Alex Ross and Mark Waid's comic Kingdom Come, as a member of Magog's Justice Battalion, along with the rest of the Charlton 'Action Heroes'. She was apparently killed with the other members when Captain Atom was killed.