Hedorah

Description
Hedorah was designed for Godzilla: Vengeance to look more like a "cuter, but deadlier beast." He crawls on six legs, and his eyes are smaller. He cannot transform, and he does not fly.

Optical Beams
Like the original Hedorah, he can shoot red energy beams out of his eyes.

Pollution Absorption
One of the reasons Hedorah wasn't included was that he would have the power to physically suck up trash and pollution, and convert it to power for himself. This would have been problematic because Hedorah was supposed to be evil, and this would have made him seem like a good guy.

Smoke Projection
Much like squids and octopuses, Hedorah could let out a large cloud of thick smoke that would make it hard for his enemies to see him, allowing him to either escape or continue to attack while unseen.

Radiation Poisoning
Hedorah would have been highly susceptible to radiation, as it was the one type of pollution he could not consume. This would eventually lead to his downfall, since Godzilla constantly let out low levels of radiation.

Highly Flammable Skin
Hedorah's skin was highly flammable, which would lead to his death when Godzilla fired his atomic breath, causing Hedorah to catch fire and burn to death.

Personality
Hedorah was described as being an "Innocent-looking, deceptive creature." He could travel rather fast on his six legs, much like an insect, but if he was attacked he would quickly blow out smoke and retreat out of fear.