There are sixteen monkey Pokemons. Their names are Slaking, Mankey, Vigoroth, Primeape, Chimchar, Aipom, Slakoth, Ambipom, Simipour, Monferno, Simisage, Infername, Simisears, Panpour, Pansear, and Pansage. The fifth generation of Pokemon's include an additional three Pokemon's which are Yanappu, Baoppu, and Hiyappu.
These Pokemon's are known as elemental monkey's because they are all based on a different type of element of nature. For example Chimchar is the element of fire, hence the inclusion of char in his name. Over time, they evolve into types of stones. Though they physically look like the original Pokemon, they differ in their abilities and they were inspired by monkeys.