Unit Quotes Gallery Changelog
Pump a few rounds of sweet revenge.
—Stalker enjoying his job

The Stalker is a heavy infantry used by Epsilon Headquarters. Functioning as an artillery unit, they can destroy vehicles and structures with their imploder cannon, and leech enemy infantry's health with their drain cannon.

Official description

The hulking behemoths known as Stalkers are the more successful counterparts of the genetic experiments by Epsilon scientists which resulted, among others, in the Brute. Incredibly tough and strong, Stalkers can withstand a lot of firepower. Though rudimentary, Stalkers have enough intelligence to wield firearms and are therefore hoisted into large metal suits with integrated weapons for additional protection.

Serving as mobile artillery platforms, Stalkers can withstand the recoil of their implosion cannon, allowing them to easily bring down structures as they collapse upon themselves. Their secondary weapon temporarily drains psychic energy from their infantry targets, which allows your infantry near them to slowly regenerate, which combined with melee infantry like Brutes forms a powerful combo.[1]


Stalker, once called Nightmares, is now the unique infantry of the Epsilon Headquarters, not only inheriting the original Imploder, but now also has a Drain Cannon for attacking enemy infantry and heal friendly infantry in a certain range, but the damage done by the weapon to the enemy infantry itself was not so high.

Stalkers are mainly used to siege to make up for the lack of siege vehicles of Headquarters. And as mentioned above, Stalker is very suitable to fight with other infantry. Although Stalker itself has heavier armor and will not be crushed, it should try to avoid enemy vehicles, especially anti-infantry vehicles, not to mention his speed is also slower than other infantry units.


Proselyte, a task force of Stalkers will reinforce your push for the Airbases. Their powerful long-range weapons will help you deal with enemy defenses.
—Epsilon intel during Operation: Machinehead


  • Chronologically, Stalker is first trainable in Research Stroke, and it doesn't need a Geneplug to be trained.

Act Two

  • In the single player campaign, Stalkers make their debut in Machinehead, where a small group of them is given to the player after Yunru hacks their battlefield control system.
  • Stalkers become available to train in Unthinkable.


  • Effective against structures.
  • Outranges most enemy defenses.
  • Drain cannon heals friendly infantry near the target.
  • Good combination with Brutes.
  • Quite durable.
  • Immune to Dog and Spooks.
  • Cannot be crushed by normal vehicles.
  • Slow-moving.
  • Cannot attack air units.
  • Vulnerable to magnetic weapons and anti-infantry fire.
  • Ineffective against armored vehicles.
  • Slow rate of fire.
  • Quite costly unless a Cloning Vats is built.

Behind the scenes

  • The Stalker is the successor to the Nightmare from pre-2.0psi versions that had far more firepower but did not have the drain cannon.[2]
  • The drain cannon's visual effects are reused from the old Geneburst support power in version 3.0.
  • Previously, the Stalker's base SHP sprite was available for public download. Downloads are no longer possible as there are no known links that are still working.
    • The Stalker's sprite is a slightly modified and retextured of the original SHP sprite[3].



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