Not everyone with superpowers adheres to the old "with great power, comes great responsibility" maxim. They would be supervillains. According to Champions lore, Stronghold prison was the first institution designed to hold supervillains--those that spurned the laws of mankind to assert their own authority over the powerless. Buried deep beneath the Devil's Head Mesa in New Mexico and utilizing inhibitor energy fields that restrain superpowers.
Stronghold is a technological marvel within the Champions universe. Currently, its most powerful prisoner is Menton, blessed with psionic abilities that he uses to penetrate the minds of others, wipe out their personalities, and take their bodies as his own. In GameSpot's first hands-on session with Champions Online, as luck would have it, Menton has busted out.