Wander Over Yonder S01 E07 The Pet

"If you Wander over Yonder, just you and me."

When Wander and Sylvia board an abandoned spaceship, they encounter a horrifying alien monster that is set on eating them, who Wander names, Captain Tim. While Sylvia sees the wild beast as a threat, Wander takes a liking to the ferocious little monster and tries to train it to be his pet.