The Spankenstine Monster used to be Numbuh 3's currently-deceased Posh Party Rainbow Monkey after Mushi Sanban forked it in the back during a dinner party at Numbuh 2's house in Operation: C.L.U.E.S., but was reborn as a Spankenstine Beast. After Numbuh 2 had caught Mushi in the act of forking the Rainbow Monkey doll, giving Mushi a grounding sentence with no hope for TV, the doll was buried at Plush Meadows Stuffed Animal Cemetery.