Dennis Regan -- Old role: Tough-as-nails mayoral enforcer you better think twice about crossing. New role: Apparently none in a Luke Ravenstahl administration. Still, long after midnight, on nights when the moon is full, some security guards swear a seemingly transparent Regan walks the lonely halls of the City-County Building, jiggling the locked doorknob of his former office before he mysteriously vanishes. Probably just a trick of the light.