Zack and Alex are both kind and gentle men, but Alex is a bit hardened and more serious about things than Zack, he has a tendency to be rude. Zack is very nice and trustworthy, he remains loyal to friends and would sacrifice himself for their survival. The world is overrun with the undead (Zombies) and it is the middle of winter. Alex wears a mask on his face, leaving only his hair and eyes visible, one of his eyes are Cybernetic. Zack wears a trench coat. This is set in the future, in 2186.