Immortal Empire: Sigma Legion
The Immortal War, like its namesakes, will never die.

The Immortal invasion of the Nehellenium Galaxy was supposed to last seven days, drawing from the past experiences of Immortal high command.
It has lasted seven years and counting.
The humble denizens of Nehellenium banded together, combining the armies and fleets of a galaxy, constructing vast ships to match the Immortals' and developing monstrous technologies to reach other galaxies and obliterate entire star systems. The defenders of Nehellenium proved to be hardier than thought or ever encountered, sitting on a pile of weapons sufficient to destroy the galaxy eight times over and prepping for an increasingly distant Immortal doomsday.
But the Immortals don't care. Beings who live forever can afford patience. As Nehellenium struggles to arrest the Immortal fist, a silent hand increasingly moves underneath.

The Immortal Sting is one of the Immortal Emperor's enforcers and assassins. Although unaffiliated with Sigma Legion, she often inspects the division and is usually their point of contact with Immortal High Command given her high standing. She likes big guns and luxury sports cars.
Character originally from Warhead.

The Immortals General Banfull and Veila are the Immortals-of-record in charge of the Sigma Legion. The Sigma Legion is largely responsible for the Northern Spirals and surrounding area, and until recently has stalled and achieved little success against the superpowers of the region.
General Banfull is an Immortal Maniac of both prodigious strength and stupidity. He insists on arming himself only with a metal war guitar, although the truth is he probably doesn't know how to operate a rifle. His bloodlust and utter lack of tactical sense often hinders Sigma Legion's operations.
Veila often uses her psionic invisibility abilities on the Sigma Legion's numerous wetwork operations. Nobody really knows what she does, which means she's doing her job properly.

The Sigma Shard. He's usually accompanied by a Terrorkhan, the finest soldiers hand-picked from the masses living in the Immortals' subjugated galaxies.

Random Immortal personnel for the Sigma Legion's extensive fleet detachment, including an admiral, a navy crewman, and an intelligence officer.

The faceless, impenetrable waves of the Sigma Legion Phalanxes' shields are a fearsome sight for all Anti-Immortal enemies to behold.

A single unit behind the shield. Pretty much all the infantry designs are taken from Silent-sigfig's interpretation of the Immortals.

Some of the faceless masses rise above the others and become Optios (officers). Others become Legionnaire shock troops with armor and thrusters.

An Immortal speeder packed with dakka. There's no way an ordinary Legionnaire could aim all those weapons while piloting the speeder, but to the Immortals it's more about the appearance and show of force than the accuracy. All the vehicles of the Sigma Legion, no matter the size, feature a Red-Transparent propulsion ring granting unlimited maneuverability, surprising speed, and seemingly no apparent fuel requirements.

The Immortal
Ishmael hover-tank. Its low-profile and hi-tek coating, borrowed from the famous stealth cruisers, render it all but invisible to radar and most sensors. It makes no noise as it moves and is often the first and last thing Anti-Immortal forces will see in an attack.

The Ishmael also features the RT ring propulsion system, as well as one in the main gun repurposed into a mass driver cannon for projectiles. Aside from 4 small cannons and a turret machine gun, the tank is rather lightly armed.

The turret can raise and lower itself and minifigs can be seated in the turret.

Theoretically troops could hitch a ride inside, but the interior is very plain and cramped. There's 2 crewmen inside but it's not really worth taking a picture of.

Trattorian
Pascal drones scare away other fighters and USA combat doctrine always assumes air superiority. Unless an Immortal
Ahab fighter is around.

The Ahab features an all-glass cockpit to give the pilot a better view, and also because of the expectation that it will never get hit.

A massive version of the RT ring propulsion system features on the Ahab, with traditional engines tacked on to provide a further boost. The only known speed limit to the Ahab is the pilot's ability to aim at targets, with seamless, unlimited maneuverability throughout.

Like the Ishmael, the Ahab is rather under-armed. The one exception being its two size-4 missiles, which have been known to, to the dread of all Anti-Immortal commanders, sometimes carry universally feared Black Hole Warheads.

The Ahab can fold its wings for landing and storage in racks aboard the vast Immortal stealth-carrier cruisers.

This is a shadow that no enemy of the Immortals ever wants to see.

The
Pequod-class transport is an important backbone of the Sigma Legion's operations, able to ferry a large number of Immortal boots onto the ground during invasions.

The front of the Pequod doesn't skimp on ground fire support, including several missiles to clear landing zones if needed.

Door-gunners can provide further suppressive fire during hot landings.

The Pequod's troop capacity serves the Immortal legions well, able to fit 14 standard legionnaires with their weapons.

Like all of the Sigma Legion's vehicles, the Pequod lifts off and moves around using the RT rings.

A grappling hook is included for certain infiltration missions or where traditional landing is impossible.
EDIT: Update 4/3/17

Due to the Sigma Legion's recent successes in their operations against the Anti-Immortal Alliance, Immortal High Command has chosen to reward it with a detachment of elite Immortal Terrorkhan shipped from the main Alpha Legion operating in the Fico system. Some of the most famous (or infamous) soldiers in Nehellenium and beyond, these veterans percolated their way up through the Immortal Legions' trillions and have some of the best training and weapons the BrikVerse has to offer.

All Terrorkhan are equipped with jumpjets and are expert wielders of a multitude of ranged and melee weapons.

Agent Valkova is an Immortal intelligence officer serving under the Accountant. A loyal servant of the empire, she will faithfully execute whatever orders her superiors give her.