Warren should know better than to hinge a stage production on Corey Feldman. And yet, the too-trusting puppet casts Feldman as his father in an autobiographical rock opera on 'Warren the Ape' (Mon, 10:30PM ET on MTV).

It's perhaps not too surprising that Feldman then leaves Warren in a lurch after bailing from the production to star in a 'Lost Boys' sequel. But, no one sees it coming when Feldman honors his promise and makes an appearance on opening night as Warren's dad.