Corrupted Pump is another victim to the corruption, a black substance which covers its host's body to take control over them. Pump is completely engulfed in the Corruption, which makes him very hostile around other survivors. He is a small kid in a pumpkin costume, and due to the corruption, his whole body is black, his eyes are black with red and white pupils, and he has a huge sharp-toothed smile. He also has what seems to be blood dripping off his eyes.