8 Season
259 Episode
Regular Show - Season 6 Episode 23 Party Horse
It's anything but.
An alien pod crashes onto Earth and an alien horse known as Party Horse turns to Mordecai and Rigby to help him pass a U.S. History test.
- Year: 2017
- Country: United States of America
- Genre: Animation, Comedy
- Studio: Cartoon Network
- Keyword: time travel, racoon, slacker, anthropomorphism, park, high school friends
- Director: J.G. Quintel
- Cast: J.G. Quintel, William Salyers, Mark Hamill, Sam Marin, Minty Lewis, Matthew Mercer