Character from Half-Life 2 by Valve
The true rulers of the Combine on Earth — enormous grub-like psychics who float in life-support pods and consider humanity a resource to be processed.
The Advisors are the Combine's governing caste on Earth — the true authority that Breen served and the Overwatch obeys. They are ancient, powerful, and completely alien in their thought processes. They do not communicate in any recognizable language — they emit psychic pressure that translates into compulsion rather than comprehension. They are terrifying because they are helpless and omnipotent simultaneously. Their bodies are immobile grubs dependent on life-support machinery. Their minds can pin a room full of armed humans in place with a thought. The proboscis attack — used to kill Eli Vance at White Forest — appears to extract memories, knowledge, or something more fundamental from a living brain. The Advisors' presence represents the Combine's true nature in a way that human collaborators and modified soldiers obscure. This is what the empire actually is: alien intelligences that view other species as data to be harvested.
Massive pale grubs, each ten to fifteen feet long, suspended in mechanical life-support cradles. Their skin is translucent and veined. They have no visible eyes — instead, a cluster of sensory tendrils extends from their head. A long, sharp proboscis can extend from their mouth to pierce a victim's skull and extract... something. Their pods float using Combine anti-gravity technology. When active, the air around them distorts with psychic pressure — objects lift, people freeze in place, sound dampens.
Also known as: Advisors, Combine Advisors, Shu'ulathoi