Nergigante

Nergigante is an Elder Dragon that appears when other elders are in the vicinity. Its penchant for destruction is well documented. Like all other elder dragons, they were considered to be most dangerous beings in this universe, the Grand Alliance Animal Preservation Command keeps tabs on its movements as a result.

Physiology
Nergigante is a dragon with a bristly appearance. It is covered in spikes that constantly regrow as they're broken off. It has two massive horns similar to a bull. The monster's hide is primarily black with purple and orange accents.

Abilities
Nergigante is able to regenerate and heal its wounds at a remarkable rate. When the spikes on its tail, arms, or back are broken, they'll immediately grow back. These spikes are white in color when they regrow, but will turn black if left to harden. Once these spikes have hardened, they will deal more damage to foes and repel attacks. These spikes will also be launched from Nergigante's body when it performs certain attacks, giving these attacks more range and making them more dangerous.

Behavior
Nergigante is an extremely aggressive monster that will continue to fight even if it means harming its own body. It'll attack anything without hesitation, especially if a creature dares attack it. Nergigante is particularly ferocious towards other Elder Dragons, since it feeds on them.

Nergigante actively hunts and feeds on Elder Dragons to gain massive amounts of energy.