Mother Long Legs

Mother Long Legs, also known as Terror Long Legs and Grandaddy Long Legs, are a new creature added in the Downpour DLC. They are a larger version of the and are the biggest mobile Rot cyst.

Appearance
Mother Long Legs are large, black, bulbous masses accented with violet X shapes, with several violet-tipped tentacles extending from their core. The shape of their core and number of tentacles they have may vary.

Combat
Fighting a Mother Long Legs is an exercise in futility. Despite having health, they're nigh-invulnerable to almost all weapons and take almost no damage from them, not even from things that are usually deadly to Rot cysts like an hitting their cores. The only thing that can kill a Mother Long Legs efficiently is a, as they can't resist its instakill effect. Short of this, killing one in the span of a normal cycle is impossible. Further frustrating this issue, their legs seem to take incredible amounts of damage to permanently disable, if they can be disabled at all.

Stealth
Like the other Rot-based enemies, Mother Long Legs are blind. However, they have an acute sense of hearing that allows for them to pursue the and other prey. Distracting one with thrown is the easiest way to evade it.

Evasion
Despite their large size and long tentacles, fleeing from a Mother Long Legs is easier than with other mobile Rot cysts, as they're much slower than a.

Abilities & Behavior
Mother Long Legs exhibits the same hearing ability as the, actively searching for prey to consume either by inserting their tentacles into small crevices like pipes and tunnels to grasp hiding prey or approaching the source of loud noises. When a creature manages to evade its tendrils, the Mother Long Legs lingers for a while in the same position where the creature escaped, attempting to fit into and use its lengthy tentacles to grab and pull it out.

Trivia

 * They devolved in the Garbage Wastes, becoming Daddy Long Legs and eventually Brother Long Legs over time. This implies that the Rot is likely incapable of surviving—or at least spreading and evolving— outside of Five Pebbles.
 * Interestingly, Mother Long Legs are able to consume other mobile Rot cysts should they come in contact with each other, including Daddy Long Legs.