Brain Sucklers are enemies that spawn after defeating the Lunatic Cultist, near the Nebula Pillar. They actively seek players and upon making contact will attach to their head. They constantly deal damage while attached and will also apply the Obstructed debuff upon contact - this lowers a player's vision drastically except for a small section directly around them.
- Brain Suckler might be a reference to iconic Headcrab enemy from Half-Life series. This is because Brain Sucklers are referred as Nebula Headcrabs in game code.
- Brain Sucklers might also be a reference to the iconic Metroid enemy from the video game series of the same name, due to the resemblance.
- Added to the game.