Mother Long Legs

Mother Long Legs, also known as Terror Long Legs and Grandpa Long Legs, are a new creature added in the Downpour DLC.

Appearance
Mother Long Legs are large, black bulbous masses, with several violet-tipped tentacles extending from their core, accented with violet X shapes. The number of cores and 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 will 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, but have an acute sense of hearing. Distracting one with is the easiest way to evade it.

Evasion
Fleeing from a Mother Long Legs is easier than with other mobile Rot cysts, as they're much bigger and 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 any unfortunate prey that didn't react in time or following towards the location of loud noises caused by creatures jumping or falling. When a creature manages to evade its tendrils, the Mother Long Legs will linger 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. Unlike Daddy Long Legs, it cannot fit in connection pipes.

Trivia

 * They devolved in the Garbage Wastes, becoming Brother and Daddy Long Legs; meaning that while Five Pebbles is doomed, 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 Daddy Long Legs should they come in contact with each other.