The Chief shakes his head. "I don't know if anyone's called themselves an Avenger, but I don't know the history of many of the crew members. Ask around, you might find something." In honesty, he can't really say he knows anyone here too well except Kelly and that's because Kelly is "family". The Chief's never been good at making friends outside the confines of the Spartan project and being here, while it's forced him to be a little more sociable, hasn't taught him any social skills.