Duke's personality has been that of a confident, aggressive, politically incorrect, wise-cracking, hyper-masculine man. Although not superhuman, Duke manages to achieve incredible physical feats of violence and conquest through sheer machismo and expertise with automatic firearms. In terraria , his massive ego is somehow capable of functioning like a shield from physical damage. An aquatic pigron mutation from the depths of the ocean who surfaces in search of a rare, savory type of worm.