The Chief, easy. People only die around him so much cause he's always sent into the most dangerous (suicidal) missions, which means that those that die around him are almost always involved in the same bat-blam!- crazy situation. On there own, they'd be -blam!-, with the chief, they got a chance. He constantly risks his ass to pull people he doesn't even know outta the metaphorical fire! Plus the chief beat an entire army of intelligent, evil, parasitic, alien zombies, regular zombies would be a piece of zombie cake. Na-zi zombies on the other hand...