Sheen Racer is is the first segment of the twelfth episode of Planet Sheen.
Sheen is determined to become the fastest person on Zeenu, by entering the Zeenuian 500, where he'll have to ride on a flying creature. When Sheen participates for the race, Dorkus plans to beat him by cheating by putting obstacles and doohickeys in Sheen's way.
- 'Flavin' might be a pun on "flame" and "ravin".
- The race is similar to Mario Kart.