Not always.

[ He doesn't mind explaining, even to a stranger. Like most people he's met here so far, he's going to assume this man isn't familiar with his kind, which in a way may be a blessing. His experiences with the humans of his world aren't the best. ]

I'm a mutant. We hold in our genetic code a unique mutation which grants us superhuman abilities. They manifest at puberty, and often become stronger with time, and practice.