Gary

Gary, is the messenger for the Guardians of Eternal Youth. He owns an El Camino which can fly, and travels through a wormhole of some kind to reach the floating oasis where the Guardians of Eternal Youth live. Gary's first appearance is in the episode, Free Cake, in which he appears to condemn Skips to death after he didn't complete the ritual of youth dance. Skips is a friend of Gary's since he said, "Gary, you don't have to do this!" He bears a strong resemblance to David Bowie. He was seen versing Skips at bowling in "Skips Strikes", along with other minor characters from Season 1. He was on a bowling team called "Magical Elements". He is shown to have freezing powers as shown in Skips Strikes when he froze the bowling lane which made Mordecai miss and hit the ground. So far, Gary has only appeared in 3 episodes: Free Cake, Skips Strikes and Cool Bikes. Though in Cool Bikes he appears to be friends with Mordecai and Rigby. When the Cool Courthouse explodes, he is seen escaping in his El Camino.

Guardians of Eternal Youth
He is a member of them as shown in Free Cake.

Mordecai and Rigby
He appears to be their friends as shown in the episode Cool Bikes where he defends them in court.

Skips
He appears to know alot about his past such as the fact that his name is really walks as shown in Skips Strikes.

Magical Elements
The Magical Elements is the bowling team that he is in.

Trivia

 * Gary has appeared as a protagonist and antagonist
 * In addition, he has appeared in 2 episodes as an antagonist and only 1 as a protagonist
 * Gary has been seen in three episodes so far: Free Cake, Skips Strikes, and Cool Bikes, and he is the first minor character to do that.