Andy

Andy is Emma's pet Red Panda.

Emma Gorby
Emma is Andy's true best friend. They first met in episode 3 of the adopt me series where Emma was trading her common dog for a red panda. She got her wish when she was trading her dog with a unknown girl. The trade was successful and the aftermath left Emma with a newborn red panda. They currently love each other.

Underswap Sans
Andy and Underswap sans are friends. They very rarely have arguments.

Oswald
Andy and Oswald first met in Oswald the Lucky Rabbit, and it shows that they don't know each other quite well.

In Flow is Smart, He caught his attention by somehow calling him "black rabbit". In The Secret Door, He helped Zizzy free Photo Negative Mickey, Jeffy and Oswald By killing True Mickey.

After The Secret Door, They have shown to be friends, but it is unknown if they share a good relationship or not.

Gumball
not much is known about their relationship, since they never known each other.