Spider’s mom in Avatar is Paz Socorro. The canon answer comes from expanded Avatar lore, not a direct reveal in Avatar: The Way of Water.
If you have been wondering who Spider’s mum is in Avatar, the movies keep her mostly off-screen. The comics give you the missing piece.

Spider’s family history shapes almost everything about him. He is a human kid raised on Pandora, caught between the Na’vi world, the human world, and the shadow of Colonel Miles Quaritch.
The Canon Answer To Spider’s Parentage

Spider’s parentage is simple on the surface and messy in the story. The comics spell out the connection between Paz Socorro and Colonel Miles Quaritch as Spider’s parents more clearly than the film does.
Paz Socorro Is Spider’s Mother
Paz Socorro is Spider’s mother in Avatar canon. Avatar: The High Ground explains that she was an RDA Scorpion gunship pilot who became involved with Quaritch, which led to Spider’s birth.
Spider is the biological son of Quaritch, played by Stephen Lang, with Jack Champion portraying Spider on screen. The films do not give a full on-screen family reveal, so the answer comes from the wider Avatar story world.
How Miles Socorro Connects To Colonel Miles Quaritch
Miles Socorro is Spider’s full name. The “Miles” part connects him to Colonel Miles Quaritch.
The name makes his link to Quaritch easy to miss at first, since the character is mostly known as Spider. The family tie is a key part of his identity and explains why his story keeps circling back to Quaritch in Avatar: The Way of Water and beyond.
How Paz Socorro Died On Pandora

The comics reveal that Paz’s death happens off-screen. She served the RDA on Pandora, fought in combat, and died during a major battle, which left Spider without his mother very early in life.
Her Role As An RDA Scorpion Gunship Pilot
Paz was an RDA Scorpion gunship pilot. She flew for the RDA during the conflict on Pandora, putting her on the front lines against the Na’vi and the Omatikaya.
Her role ties her directly to the human war machine that shaped much of Pandora’s history.
The Battle Of Ayram Alusìng And Paz’s Death
The comics say Paz died in the Battle of Ayram Alusing when her Scorpion gunship was struck. That event explains why Spider never grows up with her.
Her death takes place during the fighting around Pandora, the Tree of Souls, and the war between the RDA and the Na’vi.
Why Spider Was Left Behind
With Paz gone, Spider became an orphan, left behind as a baby on Pandora. Surviving humans raised him, and he later grew close to the Omatikaya world through the Sullys.
His childhood feels split between human survival and Na’vi life.
Why Her Absence Matters To Spider’s Story

Paz never appears in the way Spider’s other family ties do. Her absence leaves Spider without a real link to his birth mother, which makes his place in the Sully family and among the Na’vi feel even more fragile.
Spider And The Sully Family
Jake Sully and Neytiri give Spider a home, even though he is not Na’vi. He grows up around the Sully family, which gives him love, protection, and constant tension.
In Avatar 2, that home life helps explain why Spider feels pulled in different directions.
Quaritch, Neytiri, And Spider’s Split Loyalties
Spider’s bond with Quaritch is deeply uncomfortable, while Neytiri often sees him as a threat. That split leaves Spider caught between human blood ties and the Na’vi family that raised him.
In an Avatar sequel, that tension is a big reason his choices feel risky and emotional.
Kiri And Spider As Outsiders
Kiri and Spider both live near the edges of the groups around them. Each one carries a sense of being different, even inside the Sully family.
That shared outsider feeling gives their bond extra weight in Avatar lore.
Where This Backstory Comes From

You do not get the full Spider backstory from Avatar: The Way of Water alone. The clearest answers come from comics and tie-in material.
What Avatar: The High Ground Reveals
Avatar: The High Ground gives you the core canon: Paz Socorro is Spider’s mother, Quaritch is his father, and Paz died during the war on Pandora. That comic fills in the gap the movie leaves open.
How Dark Horse Expanded The Movie Canon
Dark Horse expanded Avatar canon through the comics, adding family details that the films only hint at. The movie world and the comic world work together here.
If you want the full answer to who Spider’s mum is in Avatar, the comics provide it.
Could Fire and Ash Revisit Paz Socorro?
Avatar: Fire and Ash and Avatar 3 could return to Spider’s past. A flashback feels more likely than a full return.
Paz died long before the events of Avatar: The Way of Water. The Quaritch family thread gives the sequels a reason to bring her name back.