Beast of the Yellow Night

Satan saves a man from death on condition he become his disciple (and, as it turns out, a hairy murderous beast).

Beast of the Yellow Night is a 1973 horror movie directed by Eddie Romero, starring John Ashley, Eddie Garcia, Leopoldo Salcedo. It holds an IMDb rating of 3.5/10 from 1,042 votes and runs 1h 27m.