Its obviously a super duper titan. A titan with all the shield and hull/armor strength of all the fully leveled titans put together, which has only phase missiles with a 100% chance to bypass shields for its anti frigate/cap ship weaponry, in addition to this, it also has flak guns with a small AoE, and with as much damage per shot as the Ragnarov's Rail Gun.
Its first ability is NanoSubjugationScattering SnipeBurst, which is a combination of Nano Leech, the Coronata's Subjugating Assault ability, with the damage of level 4 Chastic Burst, as well as shooting a version of Scattershot in which all of the projectiles are the Ragnarov's Snipe ability (it retains the armor reduction). Ships that are hit by this are randomly converted, those that are not are destroyed (provided they have taken sufficient damage), and a portion of damaged/ destroyed ships' health is returned to the Super Duper Titan.
Its second ability is Deploy Orkulus Starbase, which deploys an Orky with ALL the upgrades at max rank, which can also phase jump, this can be used every 2 minutes. (this is considered to be its most OP ability)
Its third ability is a passive called FuriouslyDesperateDebrisVortex of Repossession, which is an AoE version of Furious Defense combined with Desperation, which also instantly converts any planet it enters the gravity well of, as well as sucking in debris from its scores of kills to heal itself.
Its ultimate ability is The Unyielding Maw of Overcharging Impairment, which combines the effects of the new Unyielding Will (1.04), the Maw, a version of Overcharge which increases its ability damage by 1000%, and the effects of Inspire and Impair.
It was long ago sealed away in Phase Space near the galactic core by an ancient Space Pony race and completely drained of its antimatter (which it has 9999 of), however the combination of Phase Jump Inhibition technology with Phase Stabilizer Nodes at a Vasari transport lab opened a rift in Phase Space which caused it to be released from its prison. Upon re-entering normal space, it was now free of the passive regeneration deactivation effects of Phase Space, and soon regained its antimatter, and began conquering Vasari worlds one by one. When the Dark Fleet was finally sent to confront this unknown menace, it was met with a veritable armada of Orkulus Starbases (crewed by mind controlled cloned space ponies, which it has a facility for creating on board itself), led by this Super Duper Titan. The Vasari were confused for a few seconds by the presence of their own starbases in the gravity well, and did not immediately engage the enemy fleet. The Super Duper Titan's forces did not have this problem, and all of the Orkies opened fire at once, destroying dozens of Vasari Capital Ships with their first salvo. The Vasari realized these were not friendly after this, and rallied, returning fire in expert fashion, vaporizing many Orkies with their first, massive salvo. After an unimaginably massive and bloody battle, the Dark Fleet, despite destroying a large portion of the Orkulus Rex Armada, was utterly annihilated, only one massively damaged Jarrasul Evacuator remained. In desperation, they fired a Gravity Warhead at the Super Duper titan. Having been drained of all of its antimatter during the battle, it was not able to destroy this ship, and due to pathfinding issues and lag resulting from the massive fleet of remaining Orkulus Starbases, it could not catch up to it before it phase jumped away.
The crew, having been driven mad by rage at the devs for allowing such an enormously OP force to exist, was replaced with the citizens of a Vasari colony, and the rest we know. They fled, and the Super Duper Titan has been following ever since, destroying warning beacons, but always staying a good distance behind due to pathfinding issues, as well as attacking every fcking trade drone it sees.