Hybrid (Asuran)

The hybrid was a creature created by the Asurans as a weapon against the Wraith. McKay explains that it was Oberoth's pet project and was probably made as part of an arms race they likely started when they reactivated the Wraith attack code. The hybrid's inital purpose was to make more Replicators out of its enemies. Using its ability to hide itself, it would sneak around a planet or hive ship or wherever it was dropped and turn the people there into new hybrids. The creature had to be a hybrid as living tissue was infectious so technicly the hybrid was part Replicator and part disease. Unfortunatly, when it was created the Replicators underestimated the power it needed to function as it needed massive amounts just to live. The hybrid went insane with power lust as a result. At that point even the Replicators couldn't control it and they tried to destroy it, but failed. A problematic part of the hybrid is that parts blasted off or detached can still live seperatly from the hybrid.

The hybrid, decides to infiltrate Atlantis for the people and power there. It created a contruct named Angelus who it created using Elizabeth Weir's memories, which were in the Asuran database that it had access to, to make a story for Angelus that Atlantis would believe. The hybrid disguised itself as Angelus' ship and the two ended up meeting up with the Apollo. The hybrid left part of itself behind there and once it got to Atlantis began to act. It absorbed Angelus, having no more use for him, then tried to absorb power from the ZPM. Colonel Sheppard attempted to destroy it with drones, but failed, so he rammed the hybrid with a Puddle Jumper. All this did was merely stun the hybrid, but it allowed Angelus, who's mind remained intact despite the absorbtion, to gain some control over its basic functions and save Sheppard. Angelus, using Sheppard's blood and ATA gene, created a poison out of those ingredients with the hybrid's ability to manufacture whatever it needed and spreads it to the hybrid whiile its still knocked out. Angelus then helps Sheppard escape, just before the hybrid wakes up. The poison works and the hybrid slowly dies over several days and disolves into M35-117's ocean.

On the Apollo, after a lot of work, the crew manage to succed in damaging the piece of hybrid on board and blow it out the bomb bay doors into the atmosphere of a gas giant. Once the hybrid decends far enough into the atmosphere, the atmosphere crushed it, killing that part of the hybrid. Afterwards the Apollo was searched for smaller pieces and a lot were found, most dead, but one still alive. That tiny piece is killed with an arc welder and it and the rest are blown out an airlock. The Apollo then travels to the facility where the hybrid was created and destroys it with the help of a Replicator warship to ensure that another hybrid is never created.