Night of the Bloody Apes

Informed that his sick son, Julio, will soon die of heart disease, crazy Dr. Krellman does what any good mad doctor would do and gives Julio the heart of a gorilla. Oops. The transplanted ape heart somehow or other turns the frail young man into a "horrible half beast, half man" with the body of a muscleman and the face of a (sort-of) monkey. In a hilarious frenzy of over-the-top gore and gratuitous nudity, Julio-the-Half-Ape immediately runs through the streets attacking women and mutilating men. Why? 'Cause it's what monsters DO. Quickly deducing that "the heart of a gorilla is much too potent for any human," Dr. Daddy surgically swaps Julio's simian heart with one taken from -are you ready?- a female wrestler. Double oops. Yes, Julio once again turns into a big-boned gorilla man, only this time in pajamas... (official distributor synopsis)