Jimmy Blake (played by Henry Arthur) is a protagonist in Road Demon.
Joan Rogers (played by Joan Valerie) appears in Road Demon.
Papa Luigi Gambini (played by Henry Armetta) appears in Road Demon.
Anderson (played by Jonathan Hale) appears in Road Demon.
Ted Rogers (as Tom Beck) (played by Thomas Beck) appears in Road Demon.
Zephyr (played by Bill Robinson) appears in Road Demon.
Bud Casey (played by Lon Chaney Jr.) appears in Road Demon.