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Cassie Lang

IdentityConfirmed

Real nameCassie Lang

CodenameStature / Stinger

ContinentMore confirmed

In DoomsdayKathryn Newton, as Cassie Lang¹

First seenMarvel Premiere #47, April 1979²

Created byDavid Michelinie, John Byrne²

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Level 1 // The briefDecrypted · 30 seconds

WhoThe daughter Ant-Man first stole his suit to save, who secretly dosed herself with Pym Particles and became the Young Avenger Stature, later Stinger.¹

AbilitiesShrinks to ant size or grows giant; on screen she uses a size-changing suit.¹

In DoomsdayKathryn Newton has said she returns as Cassie Lang; Marvel lists her in the cast but has not named the role.¹

Last seenAnt-Man and the Wasp: Quantumania (2023), as Cassie Lang: Trapped in the Quantum Realm, she rallies the people of Axia against Kang and grows giant to beat M.O.D.O.K.⁵

Sources

Level 2 // Surveillance recordOn screen · 4 sightings, 4 in the MCU

Every live-action sighting of Cassie Lang, and everything Marvel has confirmed.

2015
Ant-Man MCU
Abby Ryder Fortson Cassie turns seven on the day her father, just out of prison, arrives late to her party with an ugly stuffed rabbit that she instantly loves. She has no idea he has become Ant-Man until Darren Cross, in the Yellowjacket suit, holds her hostage in her bedroom. She watches the two of them fight across her toy train set, sees her father shrink out of sight to stop Cross and come back, and keeps an enlarged ant as a pet afterwards.¹²
2018
Ant-Man and the Wasp MCU
Abby Ryder Fortson Her visits are the highlight of Scott's house arrest, with cardboard tunnels, treasure hunts and a staircase turned into a slide. She tells FBI agent Jimmy Woo to leave her dad alone, covers for Scott when agents search the house while he is out, and tells him he needs a partner to watch his back, meaning her. Once his sentence ends she shrinks for the first time, with Scott and Hope, to watch a film in a tiny car.¹³
2019
Avengers: Endgame MCUCameo
Emma Fuhrmann Brief appearance. Five years after the Snap, a teenage Cassie opens her front door to find the father she believed had been wiped out, and the two share an emotional reunion before Scott leaves to find the Avengers. After the Blip she watches the celebration fireworks with Scott and Hope.¹⁴
2023
Ant-Man and the Wasp: Quantumania MCU
Kathryn Newton Now an activist with an arrest for shrinking a police car at a protest, Cassie has built a satellite with Hank and Hope that sends a signal into the Quantum Realm, and it drags the whole family down there. In a suit of her own she is captured and used by Kang as leverage over her father, then escapes, rallies the people of Axia to revolt and grows giant to beat M.O.D.O.K. At the end she reopens the closing portal so Scott and Hope can get home.¹⁵

What Marvel confirmed

The film. Avengers: Doomsday opens 18 December 2026.⁶

Sources

Level 3 // Deep archiveThe comics · since April 1979

Origin, the comics by era, abilities and recorded feats.

Origin

Cassie Lang came into comics as the reason her father became a hero. In Marvel Premiere #47 she is Scott Lang's young daughter, born with a heart defect that will kill her without surgery. The one doctor who can operate, Erica Sondheim, is being held by Darren Cross at Cross Technological Enterprises, so Scott steals Hank Pym's Ant-Man suit and Pym Particles to get her out. Cassie is seen only in flashback in that first issue; by the end of the next one the operation has worked.

Having Ant-Man for a father meant growing up among heroes. She lived for a time at Four Freedoms Plaza while Scott worked for the Fantastic Four, became close to Kristoff Vernard, the boy Doctor Doom had raised, and spent weekends at Avengers Mansion once her father joined the team. Without telling anyone, she used that access to expose herself to Pym Particles again and again over several years, hoping it would one day let her be a hero too.

It did. After Scott was killed in the attack on Avengers Mansion, Cassie went to the ruins to recover his equipment and ran into the newly formed Young Avengers. In the middle of a shouting match at the gates she suddenly grew to giant size, revealing powers she had been building in secret. She joined the team and chose the codename Stature.¹²³⁴⁵

The record, by era

1979
The Girl Ant-Man Was Made For Bronze Age debut
Cassie's first two appearances are really her father's story. In Marvel Premiere #47 she is the sick child, seen in flashback, whose failing heart pushes Scott into stealing the Ant-Man gear. By the end of #48 Scott has rescued Dr. Sondheim, Cassie's operation has succeeded and Hank Pym has let him keep the suit. The bond between a reformed thief and the daughter he did it for would drive both characters for decades.²³¹
Key issues: Marvel Premiere #47 (1979) · Marvel Premiere #48 (1979)
1994-2004
Growing Up in Headquarters Child of heroes
Cassie spent her childhood inside superhero bases. When Scott became the Fantastic Four's stand-in scientist, father and daughter moved into Four Freedoms Plaza, and while he worked with Heroes for Hire she accidentally switched on a dormant Super-Adaptoid. Once Scott joined the Avengers, her mother won a court order limiting his visits. Soon afterwards a disturbed man took Cassie from her school at gunpoint; Scott found her, and Jack of Hearts died ending the stand-off.⁶⁷⁸¹
Key issues: Fantastic Four #384 (1994) · Heroes for Hire #10 (1998) · Avengers Vol. 3 #76 (2004)
2005-2006
Stature Rises Young Avengers
With her father dead, Cassie teamed up with Kate Bishop to climb into the ruined Avengers Mansion and recover his gear. Facing down the Young Avengers, she grew to giant size for the first time, then confessed to Tony Stark that she had been stealing Pym Particles for years. After the team saw off Kang the Conqueror she stayed on, took the name Stature and fought beside them through a looming new Kree-Skrull War, even as her mother learned her secret.⁹⁴⁵¹⁰¹
Key issues: Young Avengers #2 (2005) · Young Avengers #3 (2005) · Young Avengers #6 (2005) · Young Avengers #12 (2006)
2006-2008
Choosing a Side Civil War and the Initiative
Cassie first joined the Young Avengers in resisting the Superhuman Registration Act, but after Goliath was killed she walked out on Captain America's rebels, wanting to fight villains rather than fellow heroes. She registered and trained with the Initiative at Camp Hammond. One morning she stopped the Growing Man only to see him land on her stepfather, and guilt shrank her almost out of existence until her teammates reached her. In the last battle of the Skrull invasion she grew huge and landed a giant-sized blow on the Skrull Yellowjacket.¹¹¹²¹³¹⁴¹
Key issues: Civil War #4 (2006) · Avengers: The Initiative #1 (2007) · Young Avengers Presents #5 (2008) · Secret Invasion #7 (2008)
2009-2010
Recruited by a Trickster Mighty Avengers
Answering a call from Wiccan, Cassie and the Vision found the rest of the Young Avengers turned to stone, and were drafted into Hank Pym's new Mighty Avengers by a figure who looked like the Scarlet Witch but was really Loki in disguise. For a while she split her time between both teams, and she fought with the Mighty Avengers during the Siege of Asgard. Her file from this period puts her top height at roughly 250 feet, a size she cannot hold for long.¹⁵¹⁶¹
Key issues: Mighty Avengers #21 (2009) · Mighty Avengers #24 (2009)
2010-2012
Killed by Doom The Children's Crusade
The hunt for the missing Scarlet Witch took the Young Avengers to Latveria, where they found Wanda with no memory and engaged to Doctor Doom. Travelling back to the day Jack of Hearts exploded, Cassie pulled her father clear of the blast and brought him into the present. The reunion was brief. When Doom stole Wanda's power and turned on the heroes, Cassie believed he had crushed Scott, grew to enormous size and knocked Doom down. He struck back and killed her. The Avengers later unveiled a memorial to Stature and the Vision.¹⁷¹⁸¹⁹¹
Key issues: Avengers: The Children's Crusade #5 (2011) · Avengers: The Children's Crusade #8 (2012) · Avengers: The Children's Crusade #9 (2012)
2015-2016
Doom's One Good Deed Rebirth and Stinger
An inversion spell briefly gave Doctor Doom a conscience. With only enough borrowed power to put right a single wrong, he chose to bring Cassie back to life. She returned to middle school and moved to Miami with her mother, and Scott followed. Augustine Cross then stole her Pym-charged heart to revive his father Darren, and Scott had to save her with a new one. Tired of being protected, she went undercover as Stinger to shut down a villains-for-hire app. When that went wrong Scott took the blame and stood trial, and her mother finally let the two work together as Ant-Man and Stinger.²⁰²¹²²²³²⁴¹
Key issues: Avengers World #16 (2015) · Ant-Man #5 (2015) · Astonishing Ant-Man #6 (2016) · Astonishing Ant-Man #13 (2016)
2017-2020
The Family Business Ant-Man and Stinger
When Hydra took over the United States, Scott sent Cassie to safety in France, but Hydra found her anyway and used her to force him to spy on the resistance. Afterwards she carried on working beside him as Stinger, though his habit of living in an anthill embarrassed her. When the villain Macrothrax set out to wipe out humanity with his giant Bug Lords, Cassie beat Macrothrax herself while her father dealt with the monsters.²⁵²⁶²⁷¹
Key issues: Secret Empire #6 (2017) · Ant-Man Vol. 2 #1 (2020) · Ant-Man Vol. 2 #5 (2020)

Capabilities

Shrinking

She can shrink to the size of an ant, about half an inch tall.¹

Growing giant

She can grow to gigantic size, taking on extra mass that toughens her bones and muscles and gives her superhuman strength and durability. Her top height is about 250 feet, which she cannot hold for long.¹¹⁶

Moods move her size

Her powers answer to her feelings: anger has made her grow without meaning to, and guilt once shrank her almost out of existence.¹¹³

Flight

Stinger's bio-synthetic wings let her fly.¹

Insect command

Her Stinger helmet, with a boosted signal, lets her talk to and direct insects.¹

Hand-to-hand combat

Better than average in a fight, from self-defence classes and training with Captain America and Wolverine.¹

Source of power

Years of secretly exposing herself to Pym Particles changed her body, so she can shrink or grow without a suit.¹⁴

As Stinger she added a cybernetic helmet that commands insects and bio-synthetic wings for flight.¹²⁸

Self-defence classes after being kidnapped as a child, lessons from Captain America and Wolverine, and Initiative training at Camp Hammond.¹²³

Recorded feats

comics Believing Doctor Doom had crushed her father, she grew to enormous size and knocked Doom down while he held the Scarlet Witch's stolen power. He killed her in return. Avengers: The Children's Crusade Vol 1 #8 (January 2012)¹⁸¹
comics In the Central Park battle that ended the Skrull invasion, she landed a giant-sized blow on the Skrull Yellowjacket. Secret Invasion Vol 1 #7 (December 2008)¹⁴¹
comics Brought down the Growing Man on her own, though he fell on her stepfather as he went. Young Avengers Presents Vol 1 #5 (July 2008)¹³¹
comics Beat the villain Macrothrax herself while her father fought off his giant Bug Lords. Ant-Man Vol 2 #5 (August 2020)²⁷¹
screen Covered for her father when FBI agents searched his house while he was out, keeping them from going upstairs by saying he was ill. Ant-Man and the Wasp (2018)²⁹³⁰
screen Escaped her Quantumnaut guards with Pym Particle discs, broke Jentorra out of her cell and took over Kang's broadcast to call the people of Axia to revolt. Ant-Man and the Wasp: Quantumania (2023)²⁹³¹
screen Cornered by M.O.D.O.K., she fed a grow disc into her suit's regulator, turned giant and punched him off his feet. Ant-Man and the Wasp: Quantumania (2023)²⁹³¹

Notes from the archive

The Stinger name came from an alternate-future Cassie in Marvel's MC2 line, who used it as a founding member of that world's Avengers in A-Next #1 (1998), long before the main-universe Cassie took it in 2016.¹³²³³
Cassie was nine in her first appearance and almost fifteen when she joined the Young Avengers.¹
Her first two crushes were both on boys with villainous ties: Kristoff Vernard, Doctor Doom's former ward, and Iron Lad, the teenage version of Kang the Conqueror.¹
Solicitation text for She-Hulk Vol. 2 #1 (2005) called her Titan rather than Stature; the wiki records no reason for the change.¹³⁴
Three actors have played Cassie in the MCU: Abby Ryder Fortson as a child, Emma Fuhrmann as a teenager in Endgame and Kathryn Newton in Quantumania. Fuhrmann has said she thought she was auditioning for a young Black Widow, and learned she had been recast only when Newton's casting was announced.²⁹
Marvel considered adding Cassie digitally to Tony Stark's funeral in Endgame, but Kevin Feige said they decided to keep that scene for the heroes.²⁹