Spider’s mom in Avatar is Paz Socorro. This answer comes from expanded Avatar lore rather than a big on-screen reveal in Avatar: The Way of Water.
Paz Socorro is the biological mother of Miles Socorro, better known as Spider.

Spider’s family story connects him to both the human side of Pandora and the conflict around Colonel Miles Quaritch.
The films keep much of that history off-screen. The comics fill in the gap and explain why Spider’s identity feels so complicated inside the Avatar universe.
The Direct Answer From Avatar Lore

The Avatar comics and the wider lore provide the clearest answer, not a scene in Avatar 2.
Avatar: The High Ground, the Dark Horse graphic novels, expand the story around Spider and his parents.
Paz Socorro Is Spider’s Mother
Paz Socorro is Spider’s mom. The comics show that she had a relationship with Quaritch and later gave birth to Spider, whose birth name is Miles Socorro.
A ScreenRant breakdown of Spider’s mother points to Avatar: The High Ground as the source of this information.
Miles Socorro Is Spider’s Birth Name
Spider’s birth name is Miles Socorro. This mirrors his father’s first name and highlights the family connection.
Where The Reveal Comes From
The answer does not come from a direct line in Avatar: The Way of Water. The comics adapted from James Cameron’s earlier sequel material provide the missing family history.
Later reporting confirms that Paz Socorro is Spider’s biological mother, with Colonel Miles Quaritch as his father.
How Paz Socorro Fits Into Spider’s Family Story

Paz stands at the center of Spider’s complex family tree, which ties together Quaritch, the Sully family, and life on Pandora.
Her story helps explain why Spider grows up with so little certainty about where he belongs.
Her Relationship With Colonel Miles Quaritch
Paz and Quaritch had a relationship before Spider was born. That connection made Spider the son of an RDA soldier and a woman who flew with Quaritch’s team.
This link gives Spider a direct tie to the conflict between humans and the Na’vi, even if he did not choose it.
Why Spider Grew Up Away From His Parents
Paz died when Spider was still very young. Quaritch’s role in Spider’s life ended as well.
With both parents gone, Spider grew up around other humans on Pandora instead of with a traditional family.
How The Sully Family Became His Closest Home
Jake Sully, Neytiri, and the Sully family became Spider’s closest emotional home. He lived among the Na’vi and the Sullys, even though he was not one of them.
That made his place on Pandora feel both warm and unstable.
What Happened To Paz On Pandora

Paz’s fate is tragic and shapes everything that comes after for Spider.
Her role in the war on Pandora places her in direct danger, and her death removes the one parent Spider never got to know.
Her Role As An RDA Scorpion Gunship Pilot
Paz served as an RDA Scorpion gunship pilot and flew with Quaritch’s team during the fighting on Pandora.
She became part of the human military machine, even though she was also Spider’s mother.
The Battle Of Ayram Alusìng
The comics and later summaries place her death during the Battle of Ayram Alusìng, tied to the larger assault on the Na’vi.
She dies in the fighting, and that loss becomes part of Spider’s hidden history.
A report on Spider’s mother in the comics confirms that the Avatar: The High Ground material reveals this background.
Why Her Death Matters To Spider’s Arc
Paz’s death matters because Spider grows up with no real memory of her, only the absence she leaves behind.
That loss helps explain why Spider feels pulled in different directions, especially when Quaritch and the Sullys both claim pieces of his life.
Why This Reveal Matters For Avatar 3

Spider’s mother remains important because the sequels keep building around his bond with Quaritch and his place among the Sullys.
Even with Paz gone, her story can still shape what happens in Avatar 3 and later Avatar sequels.
Why The Movies Left This Off-Screen
The movies keep Spider’s parents mostly out of sight because the emotional focus stays on Spider’s present-day choices.
That lets Avatar: The Way of Water keep moving while the comics hold the deeper family details.
How It Changes Quaritch’s Connection To Spider
Knowing that Paz was Quaritch’s partner changes how you read their link to Spider.
It makes their conflict feel more personal, especially since Stephen Lang now plays Quaritch as a recreated version, while Jack Champion plays Spider.
Could Paz Return In Flashbacks Or Future Sequels
Paz could still appear in flashbacks. A future Avatar 3 story could use her to add more weight to Quaritch’s past.
Since Avatar: The Way of Water already uses memory and legacy as key ideas, a brief return by Paz would fit the world. If James Cameron wants to deepen Spider’s story with Kiri, Quaritch, and the rest of the cast, he could bring Paz back.