Whacko Smacko is a monkey who is one of the minions of Mojo Jojo. He is a cameo villian who makes a very short appearance in The Powerpuff Girls Movie. His plan for world domination is insanely and hardly slapping people. He is voiced by Dee Bradley Baker, same as Toncha Muncha.
- Since Whacko Smacko and Pappy Wappy share the same plan for world domination, it is possible they either know each other or are related. But Whacko Smacko slaps harder than Pappy Wappy.