Mutant Pokemon

Mutant Pokemon are a type of subspecies that appear in both Pokemon: Beginnings and Unlimited. Unlike regular Pokemon living in society, Mutant Pokemon are a different class to the point where they cannot be considered "Pokemon". They are regarded as "wild animals" in the series, having primitive behaviors and characteristics of one. It is said that certain Pokemon were used as a result to create a new species by a scientist, which caused their existence. Because of their behavior and irrational thought, they are a danger among Pokemon society.

Function
Mutant Pokemon are a result of two different Pokemon species DNA being combined, which results in a faulty error that became them. Because of this, they have no knowledge of self, or any thought process, which is why they are not considered "Pokemon" at all. Their instincts are similar to a wild animal's, such as hunting and environmental adaptation. However, there are some Mutant Pokemon that can be used as pets and agriculture among Pokemon society. Mutant Pokemon also have a different effect on the environment, whether positive or negative.

Unlike a regular Pokemon, Mutant Pokemon have type differences that work the opposite (inverse), making it somewhat difficult to hurt them. An example was when Happy's grandfather Moody had to take down a large hungry Oddix, which is a Grass & Rock type creature that has a neutral effect from Grass moves, but when aimed at the mouth with Seed Bomb, it blew up, ending the creature's rampage.