Cassie Lang

"'I'm not going anywhere. My father was an Avenger. This was his home. And one weekend a month, it was mine, too. Now he's dead. And all I have left of him is inside the mansion. So I don't care who you are--or what powers you have... I'm not leaving without it!' - Cassie Lang"Cassandra "Cassie" Eleanor Lang, otherwise known as Stature, is the daughter of Scott and Maggie Lang, stepdaughter of Hope Van Dyne and Jim Paxton, and older sister of Henry "Pym" Lang. Cassie's father was imprisoned  when she was a child, which lead to him wanting to be a proper hero to his daughter, which lead to him becoming An-Man, and truly becoming a man she would idolize her entire life to be. She grew up bouncing between her mother and her father's, but tended to prefer her father as she enjoyed living in the Avengers Mansion, and having a younger half-brother, Henry "Pym" Lang. However when she was in her early twenties and in college, her father and stepmother were killed by the Scarlet Witch, and then the Avengers disbanded.

Cassie now acts as legal guardian to her younger brother, and is in charge of his money and company, Pym Technologies, and the estate left to him by his grandfather and mother. Cassie placed her life on hold to remain in San Francisco, California for him and stopped dating all together to focus on him and his upbringing. This overbearing parenting lead to Pym running away to New York, where he met the Young Avengers and attempted to join. Cassie found him, and tried to prevent him from joining the team, but eventually realized that to stop him would be to silence what was left of her father, and agreed to help him become a hero.

Cassie is portrayed by Lily James.