Len Janson is an American writer and director whose career in animated cartoons and live-action motion pictures spanned several decades beginning in the 1960s.
By 1965 he had become a story man with his first screen credit in Rudy Larriva's Boulder Wham!.
Soon after, he teamed with Chuck Menville to produce a series of live-action films which used the pixilation technique.
By the early 1970s, Janson and Menville had become major names in the animation industry and welcome storytellers at studios such as Filmation and Hanna-Barbera.
Janson remained active for a few more years, mainly as story editor for Sonic the Hedgehog.