NOTE:If you don't know one or the other of the canidates, a short description is below to help you decide. I highly recommend that you also see the Wikipedia biography on each character, to help you make the best decision possible. If you are still at a loss, Google is one click away. YouTube is also a handy source of character videos...
Name: V
Occupation: Freedom Fighter
TV Show or Movie: V for Vendetta
Description: V violently opposes the Parliment of Britain in a futuristic world. He blows up numerous building and can throw knives quite well. As he dies, he completes his final act of terrorism against the government by blowing up a train.
Name: Michael Harrigan
Occupation: Police Officer
TV Show or Movie: Predator 2
Description: Harrigan is in the middle of a drug war when he discovers that someone is using state-of-the-art weapons. One of his best friends is killed mysteriously, and he investigates to find the Predator. He chases the beast down and eventually kills it.
Check out an explination in Wikipedia for more info.
Seeing how Vee dies, Harrigan lives, oh and he kills the predator (is there a greater single opponent than the predator than those already in the tourney?) with its own weapon, I gotta give props to the probably underdog here. If you watch the movies, and consider training along with resources, Harrigan is essentially better than Dutch from the original Predator, that's truly Bauer killing worthy.
harrigan...though he most likely wont see the light of day again if he makes it past this round. V just doesnt strike me as a fighting type, more of an intelligent witty guy. ill take brauns over brains.