Ellis' irrepressible optimism leads to some mixed relationships with the other team members, who cannot figure out whether Ellis is genuinely oblivious to the danger they face or has a highly resilient, strong-willed personality which he chooses to mask behind a lighthearted surface persona. Whatever is supposed to be the truth, Ellis presents to his fellow team members the view that the Zombie Apocalypse is a thrill-laden adventure while his open and friendly nature allows him to form affection