An instrumental version of "Wander Over Yonder End Title Theme" is heard as Wander and Sylvia are closing off the cave for good.
"The Axe" is the first episode where Wander and Sylvia do not appear at all.
When the helpless persona of Wander is revealed, the horn version of "Wander Over Yonder End Title Theme" from "The Tourist" can be heard.
Some of Wander's personalities are from past episodes, such as the Wander plucking furs off his head from "The Box", the lady Wander from "The Greatest", and the hero Wander from "The Boy Wander".