Primordus is the first of the Elder Dragons to have awoken in Tyria in modern times. It has fought a lengthy battle against dwarves in the Depths of Tyria and forced several underground races like the asura and the skritt to the surface.
Instead of corrupting living beings, Primordus and its champions seem to prefer to create minions called destroyers solely of earth and fire, usually spawning them in pools of lava, and they are created in mockery of living creatures. However, it is still possible for destroyers to corrupt living beings, where rock encases the creature until the body turns into lava, though no such destroyer has definitively been seen. At least one champion, the Destroyer Queen, has created destroyers in egg-like pods, implying it to be a corrupted living being though it could simply be a unique champion or new form of creating destroyers.
Primordus, like the other Elder Dragons, is thought to have last awakened 10,000 years ago, around the time of the disappearance of the Giganticus Lupicus, and then fallen back into slumber from consuming all life they could find. It went into slumber deep in a cavern deep beneath what became known as Earthshake Basin in Frostgorge Sound. It is claimed in the book titled The Elder Dragons that Primordus's previous awakening is the only one still known to history. Dwarven legends tell of many Great Destroyers which are today believed to reference Primordus and its armies.
Centuries after the end of the previous dragonrise, the asura discovered Primordus's resting place but mistook it for a statue emitting a high amount of magical energy. Because of this concentration of magical energy, the asura built the Central Transfer Chamber near the dormant dragon.
After a band of heroes defeated the fallen god Abaddon in 1075 AE, the residual magic from his death led to a temporary imbalance in the flow of magic, which caused Primordus to stir. Primordus was initially supposed to awaken in 1078 AE, but upon the defeat of its most powerful champion, the Great Destroyer, its awakening was delayed by two generations, until 1120 AE. After Primordus's rise, other Elder Dragons began to stir as well, one by one.
Destroyers, Primordus's minions, flooded the Depths of Tyria, taking over asuran cities and crushing any hopes the asura had of returning to their natural home. Around the time of Primordus's awakening, the last of the dwarves had undergone the Rite of the Great Dwarf, and they all went underground to combat the destroyers. Those that remain are said to stand watch at entrances to the Depths, ensuring that Primordus' minions never reach the surface. Nonetheless Ogden Stonehealer and Rhoban Orestriker are the only dwarves known to the surface world. However, in recent years destroyers have been appearing closer and through the surface in increasing rates, suggesting that the dwarves are losing the war in the Depths.
Primordus remained underneath the surface in the centuries following its awakening, clearing huge tracts of the underground regions and forcing races such as the skritt and murrellow to flee from the Depths. As a result of the Elder Dragon's activities, destroyers can be found almost anywhere on the surface. Only the dredge remain underground in Central Tyria, though their mines remain close to the surface.
After its initial rise and forcing out the subterranean races, Primordus remained largely inactive, having only moved beneath Tyria to spread its destroyers, until 1329 AE. Taimi discovered that Primordus had become active via a ley line energy map within Rata Novus.
Elsewhere, Seis Burntheart began tracking a large disbursement of magic, caused by Primordus moving from Frostgorge Sound to Malchor's Leap. Following the trail, she realized that Primordus was headed for the Ring of Fire Islands, specifically to Draconis Mons, the northwestern island. After moving, Primordus remained underneath the Fire Islands to consume an abundance of magic left by the deaths of the Elder Dragons Zhaitan and Mordremoth. This abundant magic was full of death and plant magic, allowing Primordus to augment its destroyers with such magic. The Pact Commander acquired a sample of the new plant and death augmented destroyers for Taimi.
Taimi developed a theory that Primordus and Jormag could be weakened by each other with their unique magical energies. The Commander traveled to Bitterfrost Frontier to acquire a sample of an Icebrood that has been infused with death and plant magic. The tests with the samples turned out to be successful.
Theorizing she could defeat Jormag and Primordus at the same time by mixing their energies, Taimi created a device using parts from Omadd's Machine to do so. However, this device was stolen by the weakened god Balthazar and just after Taimi discovered that if both Primordus and Jormag were killed the world would die with them. Balthazar brought the device before Primordus in the Primal Kiln and activated it. He inserted himself in the magical stream and began absorbing the two Elder Dragons' magic, incapacitating Primordus and its minions in the process. When the device was destroyed by the Commander, the blowback and drained magic resulted in Primordus sinking in the lava and being placed in a pre-awakening state.
After sorting through information left by the Rata Novans, Taimi discovered that the Rata Novan acquires information regarding a potential weakness for Primordus and that his unique magical spectrum could be negated all together. Taimi theorized that Jormag unique ice magic spectrum could be the unique weakness for Primordus. After the Commander acquired samples of destroyers and icebrood enhanced by magic from the deceased Zhaitan and Mordremoth, Taimi was able to confirm her theory on a small scale. When Balthazar stole Omadd’s machine, Taimi ran simulation confirming that Primordus and Jormag were each others weakness.
- With Flashpoint's release, ArenaNet has addressed the model change by claiming that it is unknown if the slumbering dragon found in the cavern was actually Primordus itself or one of its champions. However, back in 2009 they had stated that the Central Transfer Chamber was built adjacent to Primordus.
- Primordus (like the English word "primordial") comes from the Latin word primordium, literally meaning "the first to come [in order, in a series, in history]" -- more metaphorically, "a beginning."
- Primordus's appearance in Guild Wars 2 is drastically different from its first appearance in Guild Wars: Eye of the North. This is because, according to developers, there is ambiguity about whether the dragon seen awakening at the end of the Eye of the North was supposed to be the real Primordus or one of its champions. Despite this, there were multiple interviews with Jeff Grubb during promotions for Guild Wars 2's release that stated Primordus was the statue, and there are a multitude of direct comments stating Primordus woke up next to the Central Transfer Chamber, just as that dragon in Guild Wars is.
- ^ Stéphane Lo Presti and Jeff Grubb, Guild Wars 2 Guru. Links broke - image of posts:    
- ^ Interview with Jeff Grubb, Ree Soesbee and Scott McGough, GuildMag
- ^ The Final Vision Vekk: I've been to the Central Transfer Chamber. That cavern is adjacent to it. The big statue practically bleeds magic. It's why we built the chamber there in the first place.
- ^ Facing the Truth Kormir: The surge of power upended the balance of magic in Tyria, and stirred Primordus from its slumber—triggering this latest cycle of destruction.
- ^ Lore Interview with Jeff Grubb, GuildMag.com
- ^ Precocious Aurene
- Taimi: We need a force that can counter Primordus. What if it's another dragon? An ice dragon, for instance?
- Taimi: If we can discern magic types, we may be able to pit Jormag and Primordus against one another, destroying them both at once!
- Taimi: We confirm the theory in the lab, utilizing small amounts of magic to see if they'll actually counteract one another.
- ^ a b Guild Chat Episode 48: Flashpoint Link Hughes: There was also some back and forth because there's, at the end of Guild Wars 1, the depiction of the Great Destroyer and then this dragon eye opening when you defeat the Great Destroyer. So there's some question about is that Primordus, is that a Primordus lieutenant, what was going on there? I don't think it's ever clarified in Guild Wars 1, and we had concept art that seemed to indicate that maybe that was much smaller than, like, real Primordus's actual look. There was a lot of back and forth about this, but ultimately the concept art that is the loading image for that instance was put together, and then our prop artists Sam and Chris did an amazing job [...] just to make that live.
- ^ | Important Guild Wars 2 Questions Answered
- ZAM: Why were the dragons asleep, and why have they awoken?
- Mike O'Brien: They have always been here. They are power; raw, incarnate power. The City of the Gods was built on top of a dragon, the central transfer chamber that the sewer used in Eye of the North was built on top of a dragon...they're just literally magical reactors to a great degree.
- ^ Kill Ten Rats| Guild Wars Interview
- Ravious: Kerrsh's quest line in Eye of the North (ending with the quest The Path to Revelations) is a hotly debated topic on the lore forums. Why are the facets of the human gods depicted as dragons? Can the gods' cryptic message be explained in terms of Guild Wars 2?
- Jeff Grubb: Dragons are power, and the facets reflect the nature of the power that the human gods have harnessed. Both the Asuran Central Transfer Chamber and the City of Arah were built on places of power, which turned out to be directly over Elder Dragons.