Zak is a human fallen into the Underground. He is a part of the Party, which includes Missy, Aster, Vessel, and Haru (deceased). He is strong, capable, and blue-skinned due to a condition with silver-iodine. He's 21 and a man of few words yet with a large personality. He's not very bright but cares very deeply for his friends. Died and crawled out of Hell to continue fighting alongside his friends. Tries to be a pacifist but will fight if he needs to. Goal is to leave the Underground.