Avian

Avian is the friendship between Ian Ladino and Avery Martin.

Pilot

 * He interrupts him and Sabrina making out to talk to them about a party.
 * When the two meet up, they have a signature handshake.

Divided We Conquer

 * Before Sabrina leaves his house, he tells that they have to tell him before someone else does; showing that he cares about his friend.
 * When he finds out that Ruby knows, he gets worried; showing that he values his friendship.

Trivia

 * They have both been best friends since they met at the age of 5.