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Designated Hero: Mick doesn't really do anything but run around annoying the locals and getting the snot beaten out of him. Of course, the alternative is to consider Roger the hero, which rings even less true.
Mick does defeat Roger in the end, first throwing him into the worms and when Roger crawls back up the stairs, Mick beats him over the head with a flashlight until he's dead.
Narm: "Now you gon' be da wormface!" Also, Roger apparently attempts to move like a worm at one point.