 In the late 1950s, Benedict was recruited by former MGM animators William Hanna and Joseph Barbera to provide character designs for their new animated television series, "The Ruff & Reddy Show".He eventually became the primary character designer at Hanna-Barbera, designing Yogi Bear, Huckleberry Hound, Quick Draw McGraw, the various characters on "The Flintstones", and many others.Benedict left Hanna-Barbera in the late 1960s, but continued providing freelance work until his retirement in the early 1970s.