This is a weird HC thing, but I remember from Invader zim that zim wanted gir to stay upstairs and gave him the task of protecting the house from leprechauns. Now this where you need to scretch a bit of imagination, the felt are also called leprechauns and they reside with doc scratch on the green moon near Alternia. Invader Zim and hivebent connection?

I have absolutely no idea because I’ve never ever seen Invader Zim, so I don’t know if there’s any other references.