The Brain Sucker

The Brain Sucker (in the guise of Lester Barlow) was an entity responsible for causing outbreaks of madness throughout Pacific Glade. It was killed by Olivia Marconi.

On the Mountain of Madness

 * After being pursued by Mark Hannigan and Olivia Marconi, the Brain Sucker flees up Mount Palmer in a stolen car. It manages to crash Mark's cruiser against the asylum walls but sustains a head injury in the process. While Mark is wandering the halls of the asylum, Marconi finds Barlow stuck inside his car and plants three bullets in his head, killing the Brain Sucker inside him.

Lucid Dreams

 * Lester is one of the many figures Mark hallucinates while swimming through Lake Lucid. Mark believes he sees Lester (along with the other victims) because he couldn't save him.

Appearance

 * Like the Time-Eater, the Brain Sucker can only manifest in our world by possessing a human vessel. It can be identified by the spinning orange discs in its eyes while it is feeding. When he's trapped in the asylum, Mark Hannigan becomes paranoid that the Brain Sucker is hopping hosts, as he can't see the eyes of the others in the asylum (Dr. Renfield has thick glasses, Sister Martha wears a veil, and Deacon is blind).