I play World of Warcraft, and in Warcraft you have "5-man instances", kind of like a separate "level" to the game. In 5-mans, each person has a role. Your Tank holds aggro, takes the brunt of the damage, while your healer keeps everyone alive. Your DPS (Damage Per Second) lets loose on the bad guys who are hitting on the Tank. So. If Superheroes were allowed in 5-Man Instances... this would be my choice group. Wailing Caverns doesn't stand a chance. After #5 is my reserved list for a 10m raid group. MT is Main Tank. OT is Off-Tank. MH - Main Heals. OH - Off-Heals.