Having William the Penguin as his great-great-great-great-great grandfather and as a High Penguin, Willy is a quarter High Penguin, (even though he should be about two fourths) and so is was bound to have Willy combine his Werebeast, normality, Wee-gee immunity, Oceanrock, and High Penguin DNA to mix and create an (almost) invincible penguin that would save the entire penguin race. (Well, you know, if such an event would actually occur) So technically, Willy is a mutant, due to his DNA, as the fact that his High Penguin genes are higher than they should be, which is actually a genetic mutation.