Lethal exposure to Tiberium sometimes causes organic life to mutate into a visceroid, an ooze-like mass of flesh with parts of the original being, such as eyes and mouths. It moves at high speed and attacks by extending psuedeopods and toxic gas infused with Tiberium. The smaller "baby" visceroids aren't usually much of a threat, but when two meet, they can combine into the larger "adult" visceroid, which is stronger and more aggressive, attacking everything uncontrollably. 0.