Visceroid (Tiberium Wars)

Visceroids are the results of uncontrolled, irregular Tiberium mutation.

Background
Visceroids were disturbing creatures that sometimes form when organic life dies to tiberium exposure. As flesh breaks down after death, it has the potential to mutate into a visceroid, a crude Tiberium-based lifeform. Visceroids often appeared to be blob-like masses of flesh that sometimes had a few recognizable features from those they once were left over within their structure, and were highly erratic in nature. Some types were even capable of combining their biomass to essentially make a larger visceroid. One of the first mutated creatures to appear, the visceroid was encountered as early as the First Tiberium War.

In-game
The Corruptor of the Scrin, or rather, its Tiberium spray, were noted to create Visceroids on occasion, an unintended side effect of this BC weapon. This was removed from Kane's Wrath but the description detailing this remains.

It was also seen attacking an Annihilator in a Tiberium field in Cologne. It was a mystery how a visceroid was sighted, as there was no Corruptor present.

In Kane's Wrath, Viceroids are moving insta-rank crates. Any human non-epic infantry gain near instaneous Heroic status. Venoms and other craft move up to the Heroic rank when they at least kill three viceroids.

Scrin Foreman who have managed to get some viceroids out of infantry will go rampant for a short while, attacking the corrupter who first mutated it but it does no damage. Eventually it 'calms down' and then becomes one of the commander's units