In the late 20th century, Downs worked on movies such as Coonskin, Heavy Metal, The Looney Looney Looney Bugs Bunny Movie, Heidi's Song, Black Cauldron, and Christmas in Tattertown. Some of his later television credentials include G.I. Joe, The Transformers, The Jetsons, Inhumanoids, My Little Pony 'n Friends, Jem, Muppet Babies, and Tiny Toon Adventures.