Brutal Bruno, The Jackals Biker Gang Member was played by the voice of Norm Lenzer, who was also the original screenwriter of the movie itself.
The first theatrically released animated film to star Kenneth Mars, later he'd go onto voice King Triton in The Little Mermaid (1989), Professor Screweyes in We're Back a Dinosaur's Story (1993), and King Colbert in Thumbelina (1994).
Controversial online figure Christian Weston Chandler of "Sonichu" fame would claim this film to be among the best animated films ever made with many of his observers and fans drawing direct parallels between The Adventures of the American Rabbit and the plot of Christian Weston Chandler's "Sonichu" web comic.