Legion stars an animal.
Dan Stevens stars as Haller , a mutant diagnosed with schizophrenia at a young age .	Dan Stevens	Dan Stevens	mutant	Mutant (Marvel Comics)	schizophrenia	schizophrenia
In American comic books published by Marvel Comics , a mutant is a being -LRB- usually otherwise human -RRB- who possesses a genetic trait called an X-gene that allows the mutant to naturally develop superhuman powers and abilities .	Marvel Comics	Marvel Comics	American comic books	American comic books	genetic trait	genetics	superhuman powers and abilities	List of comic book superpowers
