He is best known for his work at Fleischer Studios. He worked as an animator for Fleischer Studios (1934-1938), the Walter Lantz Studio (1938-1939), Walt Disney Productions (1940-1941, where he provided character animation for the "Pink Elephants on Parade" segment in Dumbo and "The Dance of the Hours" in Fantasia), and Hanna-Barbera (1959-1986). Lokey died in Los Angeles on November 4, 1990.