Design a highly detailed, tongue-in-cheek enemy for an action RPG—a heavy metal skeleton named Riff Reaper. He has intricate bone engravings (flames, musical notes), wears spiked shoulder pads made from cymbals, and a tattered "Dead Man's Jam" band tee floating over his frame. He wields a guitar-axe hybrid with lightning strings of runes and an etched blade. Exhibits exaggerated, comical expressions and movements in the style of Ralph Bakshi's adult cartoons.