He is Heroic Tribes purple form who employs some sort of corrosive gas, or similar material, as a means of attack. It is implied that this power can destroy entire (planets can be melted by his gas, is what Yuty claimed during his first battle with Age) solar systems. It appears as if he is capable of regeneration. His name is based on Karkinos, a crab that tried to help a hydra defeat Heracles
Lernaea's main ability is thought to be Life, then revealed to be Restoration.