 In 1974 he teamed with writer Dennis Palumbo and wrote for a number of television series, including "The Nancy Walker Show", "The McLean Stevenson Show", and "Welcome Back, Kotter", on which he was a story editor.After leaving "Kotter" in 1977 and amicably ending his partnership with Palumbo, Evanier wrote for and eventually ran the Hanna-Barbera comic book division.He also wrote a number of variety shows and specials, and he began writing for animated cartoon shows, including "Scooby-Doo and Scrappy-Doo", "The Plastic Man Comedy/Adventure Show", "Thundarr the Barbarian", "The ABC Weekend Special", "Yogi Bear's All Star Comedy Christmas Caper", "Richie Rich", "The Wuzzles", and "Dungeons & Dragons".