The Infested Terran is a grotesque fusion of human and Zerg biology, featuring a hunched, asymmetrical posture with exposed muscle tissue and Zerg carapace growths. Its skin is a mottled mix of pale human flesh and dark Zerg chitin, with visible veins pulsing with greenish ichor. The head is partially encased in Zerg biomass, with one eye glowing a sickly yellow and the mouth distended into a maw of jagged teeth. The arms end in claw-like appendages, and the back sports spiny protrusions. Movement is jerky and unnatural, emphasizing its hybrid nature.