The mysterious Sentients fought against the Orokin in the Old War, and for the most part have not been seen since. However, recent events are causing Sentients to appear in greater and greater numbers, showcasing the variety of their forms. Those with Codex entries are listed below.
Battalyst
Highly adaptable offences and defences.
Conculyst
Highly adaptable offences and defences.
Oculyst
Eyes of the Sentient.
Decaying [Battalyst/Conculyst]
Shielded by Hunhow using Suda's energy.
Mimic
This Sentient ambushes opponents by taking the form of mundane objects.
Eidolon Vomvalyst
A lost soul. Part energy, part physical shell, these Sentient remnants seem to have a symbiotic relationship with the much larger Eidolons.
Tyro [Battalyst/Conculyst]
A fledgling [Battalyst/Conculyst]1 deployed before it had a chance to fully develop.
Brachiolyst
Flying unit that can swoop down into melee.
Symbilyst
Frontline shock trooper that uses its large shield arm to block incoming damage.
Aerolyst
A support unit that can heal fellow Sentients. Canisters located near this unit's centre of mass appear weaker than the surrounding carapace.
Choralyst
These ethereal Sentients attack with both a sonic barrage and a thunderous homing orb.
Ortholyst
This lightweight Sentient mounts itself to solid ground in order to deploy massive long-range cannons.
Summulyst
A high-order Sentient that bifurcates its body, creating a portal it uses to summon reinforcements and projectiles. Armed with twin cannons.
Gyrix
This unorthodox Sentient Fighter tumbles and twists through space, attack with its dual missile launchers and a barrage of swarming micro missiles.
Ionix
A heavy Sentient fighter that weakens targets with a slicing plasma wave and finishes them off with a massive energy orb.
Orphix
These massive Sentients emit pulses that disable machinery, and deploy lesser Sentients that help to boost the pulse field. They have recently learned to disable warframes.
Condrix
This dropship ferries Sentient units from deep-space to battle zones around the Origin System.
Eidolon Teralyst
An ancient Eidolon, searching for its lost brethren. Trying to make itself whole.
Eidolon Gantulyst
A massive, lumbering brute of an Eidolon.
Eidolon Hydrolyst
The energy contained within this Eidolon is powerful enough to alter the local weather system.
Ropalolyst
"Known and unknowable. This thing has haunted my life, waking and asleep, ever since I made that accursed bargain. A parasite at the core of my city. It drains my wealth, my power, my reactors… and my dignity.
"This will not stand. I will see that horrendous thing destroyed.
"I will be free."
—Alad V