So instead of Gap having a Extra sized room in the Murderlies mansion cause his height and size, I think he would have a house not far from the Murderlies. It would be inside if a medium sized hill surrounded by trees and the forest that’s surrounding the Murderlies mansion and Gap’s house.

Zara would go out to his little house when it’s a clear night and takes Gap out to stargaze, sometimes even with some friends and have s’mores.

Sometimes when Gap sneezes his fur puffs out causing him to look like a ball of fur.

Zara and Gap used to be friends before Zara ran off and Gap was sent to a lab for testing.

Gap would have a wild animal as a pet, nothing else he would totally have a wild animal as a pet because he’s Gap.