Combine Advisor

The Combine Advisors, also known as "Shu'ulathoi" by the Vortigaunts, are the masterminds behind the Combine occupation of Earth and are commonly speculated as being the master race of the entire Combine empire.

Appearance
Advisor wears a skin-tight olive-green bodysuit that covers all but the ends of their bodies, with a collar adorned with golden glyphs around their "necks." They also have a pair of thin black robotic arms implanted to their backs, capable of grabbing and lifting an adult human as well as moving the weight of the Advisor. They also have an appendage which can protrude from their mouth like an elongated tongue, though it is more or less phallic in appearance. The appendage is used similarly to an invertebrate's proboscis and is plunged into a weak point, such as the human neck as shown from a scene in Half-Life 2: Episode Two.