In films after 1915, hatchet-faced Robert Kortman claimed to have served in the U.S. Cavalry prior to going on-stage. With producer Thomas H. Ince in the mid-1910s, the menacing actor often supported the era's great Western icon William S. Hart (he was one of the rowdy townsmen in 1916's Hell's Hinges) and was equally busy in the '20s. Kortman, however, came into his own in sound serials, especially at Mascot and its successor Republic Pictures, where his menacing visage turned up everywhere, from playing Magua in Last of the Mohicans (1932) to portraying One-Eye Chapin in Adventures of Red Ryder (1940). His roles grew increasingly smaller, and Kortman continued to play mostly villains until at least 1951. He died of cancer.