Mason is a person who used to play hockey he got the machete from a caben and killed zombies with it he also found a chainsaw on a dead survivor,when he gets sad or angry he silently removes people from the car by ditching them. He loves to hangout with friend's also he didn't kill or hurt anyone the blood is from zombies
I know this fixed in the current update but I recall in the game mode description saying Canada is a myth. Lo and Behold there was absolutely nothing there.