The Purifier Wars
Mutations from the human norm are a central part of the setting in the Purifier Wars. Most mutations take the form of combining homo sapien DNA with that of terrestrial animals to form the Moreaus.
The list of Moreaus is as follows:
Other mutations occur, but are less common, such as the addition of tentacles, extra eyes, etc.
Another common mutation is the natural development of psychic abilities.