Primeape

Beware when Mankey evolves into the ferocious Primeape, as its uncontrollable temper gets even worse. This evolved Mankey is always furious and extremely dangerous. It will not abandon chasing its quarry until it is caught. When Mankey evolves into the even more temperamental Primeape - Ash, Misty, Brock and even Team Rocket have no way of slowing down its fury!

First appearance: Episode 25—"Primeape Goes Bananas"