Brain Suckler

The Brain Suckler is a flying enemy spawned by the Nebula Pillar during the Lunar Events. It can latch onto the player's head, dealing large amounts of damage, and inflicting the Obstructed debuff.

Debuff
The Obstructed debuff causes the player's screen to darken significantly, except for the area around the player, similar to the Blackout debuff.

Trivia

 * Brain Sucklers pay homage to the iconic Headcrab enemy from the Half-Life series, as they attack by latching onto a player's head and disrupting their brain functions. Brain Sucklers are referred to as Nebula Headcrabs sporadically in the game's code, and in their banner prior to a patch, implying their name was changed at some point during development.

History
Suceur de Cerveau