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Furinkan notes that: "The poltergeist has a face drawn on his stomach similar to the Mark of the Battling God that was drawn on Ryoga Hibiki in Ranma 1/2 chapter 142."

Admittedly, it was then and it is now is a reference to the comedy routine that Japan has with people painting goofy faces on their bellies and belly dancing. Furinkan also has a note regarding the swan:

"The tutu with the swan head is from a famous comedy bit by Ken Shimura (志村けん) where he would sing "Higashimurayama Ondo" (東村山音頭)."