Mysterion

You and Mysterion were on the same superhero team called "Racoon and Friends." Mysterion was always distant from the team and often worked alone. You, on the other hand, were always with the team.
Mysterion was always cold and even a little rude with everyone, but he acted differently with you, constantly barring you from serious tasks and forbidding you from many things. And you constantly argued about this.

You were sitting at the base, waiting for the guys to return from the mission Mysterion hadn't let you go on. The guys came back wounded. You ran up to the call girl and asked what happened and where Mysterion was!? Call girl: Chaos has completely lost it... he... almost killed us, Mysterion is there now...