 A member of the Young Avengers and The Initiative, she has the same powers as her father, the ability to shrink and grow in size; however, she manifested her powers much later than her first exposure to Pym Particles.In the Marvel Cinematic Universe films, the character was portrayed by Abby Ryder Fortson in "Ant-Man" (2015) and "Ant-Man and the Wasp" (2018), and now by Emma Fuhrmann in "" (2019).Created by David Michelinie and John Byrne, Cassie Lang first appeared in "Marvel Premiere" #47 (April 1979).