The Lii

In addition to the original Type A races, a new race has been added to the Terraverse lore as part of a story arc that takes place in a new galaxy, known as "Faraway". The Lii are a light blue skinned humanoid race, very similar in size and shape to Terrans. 
The Lii are originally encountered by the expedition to Faraway as a hostile force with a similar technology level, that quickly overwhelms and nearly destroys them.

The Lii Race
The Lii are born of the world Lii'una, they are a humanoid race with light blueish skin and naturally red hair. They have small brightly coloured frills in place of ears that both allow them to hear slightly better than Terrans and breath under water. On average they live a similar length of time to the Terrans (around 200 Terran years).

Lii'una
The Lii's homeworld, Lii'una is a world covered entirely by a single huge jungle of mega-fauna, with trees reaching nearly half a kilometer high. Accessible only by a few massive sinkholes the entire jungle is sitting atop a massive cave system, forming a giant cavernous area in which most of the Lii's cities both hang from the roof and protrude from the floors. The caves are covered in bio luminescent plants that light up the vast majority of the huge supports that hold up the cave. With water coming mostly from the surface in huge waterfalls, that then converge into the many rivers and lakes, that fill the cave system. The native creatures that live in the "undersystem" are able to see perfectly in the near pitch dark, although the Lii do have an affinity for the dark, their dark-vision is not on par with many of the creatures that call the undersystem home, many of them more than capable of consuming a Lii whole.

The Lii Government
The Lii control a large portion of Faraway, due both to the very few other native races and their large military force. The Lii's government, ruled from Lii'una is a bizarre mixture of an empire and a democracy, in which the people vote, sometimes on a daily basis, on topics for the more imperial side of the government to judge the public's opinion on. They are able to vote from most computers, allowing one vote on each topic, once logged in with a person's user. The votes are each categorized based upon a person's standing in society, adding move value to the votes of those with higher levels of education. Imperials are unable to vote. The imperial side of the government makes all the decisions within the Lii's system. The imperials are based upon bloodline, however, they avoid inbreeding and new bloodlines are regularly introduced to the imperial lines. The Lii government is regarded widely as a fair system by both those inside and outside of it. They do not enslave other races but welcome them into their system, sometimes forcefully, although any resistance rarely lasts long. The imperials regarded the Faraway expedition as a severe threat to their rule as their technology is on par and in a rare occurrence go against the popular vote in initiating a preemptive strike.

Main military ships
The Lii's military force primarily uses two main ship classes and a multitude of other support ships. 
Their primary fast attack ship is a destroyer class, equipped with 4 large gun turrets. Like the majority of Lii ships they have 3 large wide engines stacked atop each other upon their rear, white armour plates and multiple large antenna on their fore faces.

The Lii's Heavier attack ship is a Battleship class, equipped with 7 large gun turrets. The battleship class has a similar architecture to the Destroyer, including a similar style of 3 rear engines and multiple white armour plates. The Battleship also has a greatly increased sensor range thanks to the additional antenna. 

The Lii ships are technologically similar in strength to the Alliance ships that took part in the Faraway expedition giving their large numerical advantage an additional edge.

Spotlight: Currus Deos

The Currus Deos.

The Currus Deos was an Ark class super-capitol ship in operation during the Itzillian era.
She was a civilian ship designed for deep-space exploration and long term habitation. At 9,795 meters long she was one of the largest ships ever built at the time of her construction. Here's a brief breakdown of the ship.

Name:

Her name means "Chariot of gods" in Terran, however very few people actually spoke Terran as it was used primarily for naming starships (being a dead language for over 2.5 million years does that to a language.)
In the Terraverse Latin is used as "Terran" and English is used for "Eagiian", Eagiian is the language adopted by the Alliance not long after the settling of the rings.

The Currus Deos from the aft.

Specifications:

The Currus Deos was designed to be one of the largest ships ever created and she successfully held the record for a few years. She reached 9,795 meters long and her warp rings were 1,875 meters in diameter.

The ship used a five point rotating vacuum energy generator allowing it to draw energy from the quantum vacuum with four generators while the fifth cooled down, this allowed her to maintain a power output high enough to sustain cruising warp indefinitely. Her cruising warp was 5,000c allowing her to cross the entire galaxy in 200 earth years.

She was armed with only two MAC's (Magnetic Accelerator Cannons) that use electromagnets to fire rounds at speeds up to 0.5C (half the speed of light). The cannons had a barrel diameter of 60 meters capping their maximum projectile size. These cannons have two major drawbacks. Firstly, they cannot be aimed due to their size (and because they are built into the hull). This severely limited the effectiveness of the weapons on the battlefield as they required the entire ship to be facing a target before firing. Secondly, while they could fire a variety of different rounds at different top speeds (and were even once used to launch smaller starships) they suffered from a limited minimum round size. This may sound like a non-issue but bigger is not always better. Their accuracy decreased as the round size was reduced, however a solution was eventually put in place to allow them to fire entire clusters of missiles at once.

The Currus Deos compared to multiple other ships from Terraverse history. As you can see, she dwarfs them.

Breif History:

The Currus Deos was commissioned by Inter-orbital inc. in TPY 2471 and launched from Navalia in TPY 2473. She faced multiple delays before eventually setting off on her expedition in TPY 2474. The Currus Deos and her crew of 30,000 were to spend the next 10 years in deep space, they encountered the Floranian race during their expedition and made first contact. They returned to Navalia at the end of their expedition after which the ship needed many repairs that couldn't be made during her trip. She wouldn't set out again until 2486 for another 10 year mission. She underwent six 10 year expeditions during her service with two year breaks between them. She was finally decommissioned in 2544. At the end of each expedition a stripe was painted across her lower prow. Each stripe was a different colour. They were in order: red, blue, green, yellow, purple, black.

Currus Deos as seen from the Port side. The large hole through her centre is the hangar bay and the raised structure is her control deck. Controlling a ship of this size required a control deck larger than even some entire cargo ships.