COR Crabs

"A sub-species of the Corruption, COR Crabs are the corruption's third way of expanding their numbers, though this one is similar to the first way, that being physical contact."

= COR Crab Levels = Just like anything COR, there are levels to it, starting with COR-0C, a tiny crab creature roughly the size of a bowl, this level of COR-C, while still being able to attack, is unlikely to kill, COR-0C have only been seen dead, live ones are most likely near COR Matriach, Next is COR-1C, this is the standard COR-C, roughly the size of a Chicken, having grown from 0C they are now larger and have their front claws, these ones have been seen both dead and alive, mainly seen feeding on corpses. Next is COR-1CA, where a COR Crab has latched onto the head of a host and is now controlling them, rarely seen detaching from the host. Next we have COR-2C, The Corruption Matriach, presumably, COR-0C form inside the Matriach's womb and, once ready, are birthed live, much like mammals, how the Matriach knows the 0C is ready is not yet know. The Matriach has, much like all other COR C forms, four legs of which it stands upon, The Matriachs legs are extremely sharp and can cut through weak metals.

Yes these are a half life reference.