From the outset of his career, towering, grim-visaged actor Jack O'Halloran excelled in brutish roles. O'Halloran was impressively menacing as the nonverbal space criminal Non in the first two Superman movies. He was equally adept with dialogue as the hulking Moose Malloy in 1978's Farewell My Lovely. Jack O'Halloran continued to grunt and glower his way through the 1990s, essaying such fearsome roles as Yeti in The Flintstones (1993).