Rockin' Otto

"Grand Funk Railroad rules!"

- 's Unlock Message

 is a limited-time premium costume for Otto that was released on August 7, 2017, during Act 1 of the Homerpalooza 2017 Event. He was either placed in the player's inventory or unlocked immediately, depending on the version of the Rockin' Otto Bundle purchased.

Trivia

 * From Season 14, Episode 2 “How I Spent My Strummer Vacation”.
 * He is the only costume in the collection Homerpalooza Rock 2017. Also is the only character in the collection who is not a member of Sungazer.