After Quaritch is revealed to be alive in the body of a Na'vi, he kidnaps Jake's children. Most of them escape, save for Spider, and it's revealed that Spider's dad in Avatar is none other than the villain Quaritch.
Quaritch had a sexual relationship with Paz Socorro, one of his scorpion pilots around a year before the banishment of the RDA from Pandora which resulted with the birth of a son named Miles Socorro which Paz apparently named after the boy's father.
Miles "Spider" Socorro is a sixteen-year-old boy who was born in Hell's Gate as the son of Colonel Miles Quaritch and Paz Socorro. After the death of his parents, Miles remained on Pandora and was adopted by Nash McCosker and Mary after the Pandoran War.
Early on in the Way of Water, it's revealed that Spider is actually named Miles Socorro, and that his biological father was Colonel Quaritch, Stephen Lang's baddie from 2009's Avatar.
He's also revealed to be the biological son of Colonel Miles Quaritch (Stephen Lang), the hateful villain from the first film who sought to destroy Pandora and who is resurrected for the sequel in a new, upgraded avatar form. Spider thus exists in a nebulous space when it comes to his identity.
The Way of Water: Why Spider Saved Quaritch in Avatar 2?
Who is Spider's mom's avatar?
Paz Socorro is Spider's mom after a romantic relationship with Quaritch led to her getting pregnant. She gave birth to Spider, whose birth name is Miles (just like his father), in 2154. However, Paz Socorro died shortly after that in combat during Avatar's finale.
Unless that theory is true, Grace was impregnated by someone. Kiri's brothers joke that the scientist Norm could be her father. The movie does not reveal much information about the birth of Kiri. It is unclear whether Kiri was conceived before Grace died and her avatar carried her to term.
Kiri is the inquisitive and intelligent adopted daughter of Jake Sully and Neytiri. Not long after Grace Augustine's death, her dormant avatar was discovered to be pregnant, and Jake and Neytiri adopted the child when she was born.
Neteyam te Suli Tsyeyk'itan, or Neteyam, is a major character in the Avatar franchise, serving as one of the main characters in Avatar: The Way of Water. He is the 15-year-old eldest son of Jake Sully and Neytiri, who is also the older brother of Lo'ak, Tuktirey, and Kiri.
During the battle, Quaritch is killed by Sully's Na'vi lover Neytiri. A copy of his consciousness is subsequently transferred by the RDA into a genetically grown Na'vi body, known as a Recombinant, which returns to Pandora to track down Sully alongside other Recombinants.
Augustine's colleague Norm Spellman (Joel David Moore) was the father and Grace conceived Kiri before the end of Avatar before somehow giving birth in her Avatar body. However, the more interesting theory is that Kiri is literally the child of Eywa due to some sort of immaculate conception.
Spider was shown to have grown a strong bond with Kiri, with many speculating that there could be a potential future romance between the pair, while his tumultuous relationship with Neytiri came to a dramatic head in the final moments of The Way of Water's climactic battle.
The Soul Tree is the heart of Eywa, the goddess that guides all of Pandora. Avatar: The Way of Water illustrates that Kiri has a special connection to Eywa, which means she can wield powers and feel her more deeply than other Na'vi.
With the exceptions of Jake, Norm and a select few others, all humans are expelled from Pandora and are sent back to Earth. Jake is permanently transferred into his avatar with the aid of the Tree of Souls.
Her father is not a father, her father is another mother, Eywa, the Great Mother, the sentient life force of Pandora itself that exists in all things there, but is rarely understood. So essentially yes, Kiri was born from Eywa just like Anakin Skywalker was allegedly conceived by the Force itself and its midichlorians.
It was revealed that Spider's mother was Paz Socorro, a Scorpion pilot for the RDA who flew with Quaritch's team to attack the Na'vi back in Avatar. She and Quaritch shared a romance that got her pregnant. She chose to name her son Miles after his father.
Because Grace had an avatar body, Kiri possesses human-like traits such as her eyebrows and five fingers on her hands. She also lacks the elongated canines common amongst the Na'vi.
The seizure is believed to have been caused by frontal lobe epilepsy which could also cause the other symptoms Kiri has been having, including visions and the belief that she's hearing Eywa. However, the Metkayina clan believe it's down to something more spiritual and is a result of Kiri's connection to Eywa.
Grace was fascinated with how the Na'vi were connected to each other, Pandora, and Eywa. Now, Kiri, who is intrinsically connected to Grace, has a much deeper connection to the Na'vi deity than anyone else. Kiri can hear Eywa in a way no other Na'vi has been able to, not even the spiritual leaders.
One of the lead characters, Kiri, is canonically neurodivergent - she is diagnosed with a form of epilepsy after having a seizure underwater. Importantly, humans attribute her spiritual experiences to frontal lobe seizures.
Most of them escape, save for Spider, and it's revealed that Spider's dad in Avatar is none other than the villain Quaritch. Quaritch and Spider suffer a complex dynamic throughout the film, with Spider ultimately saving his life in the end.
The answer to how is Sigourney Weaver in Avatar 2 came down to her connection with Eywa. While Dr. Grace Augustine died in the first movie, Kiri ended up miraculously being born of Grace's inert avatar.
What we do know is that Grace's last moments of consciousness in Avatar are tied to a Tree of Souls. She seemingly died during that ritual, but she also said that she was "with" Eywa, and we now know that while Grace might not be fully alive anymore, something of her essence was preserved in her Na'vi avatar.
