William Sharp
From superman.nu: Supermanica
A racketeer and confidence man who passes off a sideshow strong man as the legendary Atlas—and then stages a cunningly rigged super-strength competition in which "Atlas" appears to be mightier than Superman—as part of an elaborate scheme to establish Atlas as the world's mightiest mortal so that Sharp can launch a lucrative racket selling his victims "protection" from Atlas. The strong man, who is only an innocent dupe in the scheme, helps Superman apprehend the crafty Sharp in June 1948 (Act No. 121: "Superman versus Atlas!").
