The Grineer units encountered in Empyrean gameplay are unique variants, and are listed below. All units except for the assassination targets (Captains and Commanders) have a prefix indicating their region of operation: Kosma for Earth Proxima, Gyre for Saturn Proxima, and Exo for Veil Proxima. The Kosma/Gyre/Exo variants also have different colour schemes, but otherwise have identical characteristics (with the exception of Crewships).
[Elite] Cutter
Interceptor-class Grineer fighter; outfitted with an autocannon for devastating strafing runs. [Elite: Also equipped with missiles and flare countermeasures.]
[Kosma/Gyre/Exo] craft are found in [Earth/Saturn/Veil] Proxima.
[Elite] Flak
Interceptor-class Grineer fighter; bombards targets with a high-damage flak cannon. [Elite: Has a strong frontal shield.]
[Kosma/Gyre/Exo] craft are found in [Earth/Saturn/Veil] Proxima.
[Elite] Taktis
Interceptor-class Grineer fighter; armed with long-ranged homing missiles [Elite: that deliver an electrical charge].
[Kosma/Gyre/Exo] craft are found in [Earth/Saturn/Veil] Proxima.
[Elite] Outrider
Heavy Grineer assault craft; attacks with massive firepower from close range, then disengages while leaving mines behind.
[Kosma/Gyre/Exo] craft are found in [Earth/Saturn/Veil] Proxima.
[Elite] Gokstad Crewship
Heavy-class personal transport [Gyre: with higher-than-average speed for its type] [Exo: capable of deploying a healing field for its fighter support].
[Kosma/Gyre/Exo] craft are found in [Earth/Saturn/Veil] Proxima.
Gokstad Pilot
Helms a Gokstad crewship. She can be found on the bridge flying the ship. If the Pilot is killed, the crewship can be hijacked.
Gokstad Officer
The commanding officer of a Gokstad crewship. Wields a Karak Wraith and has the ability to spawn Roller Sentries.
Ramsled
High-impact one-shot Grineer boarding capsule.
Raider
Part of a Grineer Ramsled boarding party, packing a cluster missile launcher.
Raider Carver
Part of a Grineer Ramsled boarding party. Wields two melee sawblades, and is a relentless pursuer.
Raider Eviscerator
Part of a Grineer Ramsled boarding party. Uses a sawblade weapon capable of firing ricocheting projectiles.
Elite Lancer
Highly trained Lancer. Expected to assume support duties aboard crewships.
Butcher
Grineer shock trooper. Carries a huge blade.
Eviscerator
A Grineer specialist packing twin Grakatas and able to drop mobile cover.
Supressor
Carries an experimental icethrower to slow down advancing enemies.
Blite Captain
A Grineer Captain specialising in toxic weaponry.
Pyr Captain
A Grineer Captain specialising in thermal weaponry.
Glacik Commander
A Grineer Commander specialising in freezing weaponry.
Lektro Commander
A Grineer Commander specialising in electrical weaponry.