The mind is quicker than the eye.
Epsilon Adepts are one of the main Epsilon infantry, using their psychic powers to control an enemy's mind or killing nearby infantry with a psychic blast.
The very core members of Yuri's Epsilon Army, the Adepts are individuals with above average psychic abilities, allowing them to bend the will of others to suit their goals. They pose a significant threat to almost all soldiers and human-operated vehicles, turning their victims against their compatriots with a mere thought.
Adepts are capable of defending themselves against infantry with a potent psychic blast which overwhelms the brains of unshielded soldiers caught within, resulting in death. Though powerful opponents, Adepts are not able to control the minds of animals and are completely defenseless against robotic units.
Epsilon Adepts are used to capture enemy units. These units can then be used to fight, but most of the time they are immediately sent to a Grinder or a Bio Reactor. The unit becomes available to train from Epsilon Barracks once a Pandora Hub is established on the field.
Epsilon Adepts could only control the mind of one unit at a time, making them vulnerable to groups of enemy units. Although their psychic blast can instantly kill large groups of infantry, it is difficult for an Adept to come close to them before getting killed.
Some units could not be controlled by Epsilon Adepts: heroes were immune to mind control, as they had been trained to resist it; most non-human units, such as Attack Dogs, were psychologically incompatible with Epsilon's mind-control technology; Robot Tanks, Terror Drones, rogue Stingers and Teratorns were completely robotic and also immune to mind control by definition; ore miners and epic units could not be mind-controlled either. Units that are psychic themselves cannot be mind-controlled by any means.
It is worth noting that if a unit is already mind-controlled, the Epsilon Adept are unable to forcibly break the existing psychic link and assert their own projected will, unless the link is terminated from the other end.
- In the prequel mission Archetype, PsiCorps Troopers (then only identified as Enemy Infantry) appear among the Allied forces. They can't do anything to Boris and Morales, who are both immune to mind control. Allied troops don't fire on them during the first half of the mission. As the mission progresses, however, these Troopers will attempt to mind-control Allied forces, thereby causing a commotion that alerts the entire Allied base. The mind controlled victims will not fire upon the Soviet commandos. Chronologically, this mission marks their first appearance.
- In Act One, Epsilon Adepts are known as PsiCorps Troopers. They are the very first Epsilon unit introduced to the player, in Peacekeeper. They appear in almost all Epsilon Act One missions, and are trainable by PsiCorps from the Soviet Barracks (requiring a Palace or Battle Lab) in Moonlight as well as by Russia and the Latin Confederation in the following missions:
- However, the Chinese forces in Panic Cycle are also possessed the Soviet-PsiCorps equipment. In Sunlight, if the player captures the Chinese base and builds an Atomheart, the player can still gain access to PsiCorps Trooper as well.
- The Conqueror is the last mission where Adepts are used by PsiCorps, where they're tasked with mind controlling all eight Russian Topol-M platforms. After this mission, PsiCorps switches to Epsilon Elites.
- Epsilon Adepts are notably absent from the Scorpion Cell forces that rebel against Yuri in Obsidian Sands, Fullmetal, Neuromancers, Nightcrawler and Survivors.