This season featured guest appearances from Adam West, Judy Greer, Tara Strong, Chris O'Dowd, Patrick Warburton, Zachary Gordon, John Viener, Dee Bradley Baker, Debra Wilson, Jennifer Tilly, Ryan Reynolds, Fred Tatasciore, Lacey Chabert, Chris Cox (voice actor), Phil LaMarr, Jonathan Morgan Heit, D.C. Douglas, R. Lee Ermey, Hunter Gomez, Nicole Sullivan, Kevin Michael Richardson, Gary Cole, David Herman, Lucy Davis, Jackson Douglas, H. Jon Benjamin, John Viener, and Isabella Acres.