A Mother Long Legs, a gigantic, cancerous, mobile Rot cyst, can be seen stationary, trying to listen to anything that makes a sound, even the lightest footsteps. The MLL is completely blind because it has no eyes but has the sharpest hearing. It has a huge black core filled with bulbous masses, each having a violet X in the middle. Long black tentacles with violet tips sprout out of the core, covering the whole large room with its tentacle length. It is extremely deadly, durable, and has the fastest regeneration in Rainworld. They're the biggest Rot cyst. It also lacks the ability to feel emotions.