Telo-Magla

Telo-Krljust (which means Body-Fog in Serbian) is a mutation of a creature called a J'avo (who are subjects who were willingly administered the C-Virus directly into their bloodstream). The mutation occurs when the chest area receives a critical amount of damage. This mutation completely transforms the J'avo into what is essentially an immobile poison gas emitter, albeit temporarily.

The transformation itself appears to be very painful for the subject; the creature will fall onto its back and before long plant-esque tentacles and enormous Moth-like wings explode out from the chest area and a thick-haze of poison gas will emit from the body. This process happens until all of the gas is exhausted, and then the mutation will revert (unless it is killed before this process can begin).

The above is unique amongst the J'avo mutations as this appears to be temporary. It's not clear if the tentacles and wing organs simply retract back or they are absorbed somehow. However, once the J'avo has reverted to it's previous state it appears to be in no state of shock and is able to conduct itself as any other. For example if it held a firearm, it would start to use it again.

It's theorised that this is a mutation that has not quite worked out, the fact that the creature has little to no defensive capability apart from the smog plus the added fact that it is the only one that can be undone.