Conversation so far:
what was the fictional character Legion?
Legion is a fictional character appearing in American comic books. Legion takes the role of an antihero who has a severe mental illness including a form of dissociative identity disorder.
who did Legion have an affair with?
Legion did not have an affair.
was Legion married at the time?
Legion never married.

Question: where did he come from?
Self-contained rewrite: where did Legion come from?