Just spitballing....

Character could be an older father-figure of sorts for the Six. Was at one point an impetuous street-punk with with no concept of restraint or responsibility, abusing his powers. Eventually grew to respect the power he wielded, thus maturing and mellowing out. In character dynamics he'd probably strike a balance between "cool older guy who has mastered his powers and acts like a mentor," and "weird dad that does weird dad stuff," with just a bit of "can't take the streets out of the boy" hot-bloodedness.