Aliens

Alien faction is formed by strange ships from the Wild Space. They do not communicate directly with anyone but they do broadcast ineligible signals. Their Ships have strong geometric shapes and use unknown energy weapons. All encountered Alien ships have life signatures present that disappear immediately after the ship is disabled.

Nothing is known about their biology since no bodies were ever found. But since some ships seem to have memories of previous encounters and are learning to adapt to changing circumstances there must be some living component there.

Alien Theories
Advanced Remote Control Theory

This theory proposes, that Alien ships are nothing more than really advanced form of remote operated drones, explaining the life signatures as a bleed-through from the remote operation signal. Some form of subspace signal must be used since there is nothing that can be detected.

Telepathic Control Theory

Idea behind this theory is such, that the ships are operated like puppets from beyond the Wild Space. But have to be operated in another manner since no signals can be detected. Life readings would be explained by the presence of the Alien consciousnesses. Telepathic Control Theory would perhaps explain the Reavers and their relation to the Aliens as well.

Ships Types
Drone - Small drone equipped with front facing fast firing energy weapon and light shields.

Cube - Large Cube shaped ship with multiple unknown pulse and plasma torpedo weapons. Heavily shielded and warp signatures can be detected in it's hull.

Diamond - Diamond shaped vessel with multiple unknown pulse and plasma weapon emplacements. Warp signatures can be detected in it's hull.

Fighter Craft - Small fighter ship equipped with pulsed energy weapons of standard yield.

Marduk - Diamond shaped ship with several alien satellites attached to it's hull. It's weapons are irregular based on other ships of this shape.

Ravine Protector - Small atmospheric diamond shaped probe that can be found on planet Ravine. Equipped with a large number of low yield pulse weapons.

Sensor Vessel - Aggressive looking diamond shaped ship with large antennas at the rear end. Some people say it looks like a squid. It is equipped with several unknown front facing weapons.

Eradicator - Purely offensive ship with several front facing energy and plasma weapons. It is the only one we know off that tries to actually communicate with other ships. But beware it's main forward facing weapon can tear to any shield and dampening safe zone.

Long distance striker - Small alien ship capable of firing strong energy beam at long distances.

Interdiction ship - Small ship capable of firing a gravimetric charge capable of disabling ship's jump drive.

Hive ship - Lightly armed ship capable of deploying other Drone ships. It is only alien ship equipped with physical projectile weapons.