Cassandra "Cassie" Lang is a fictional character appearing in American comic books published by Marvel Comics. The daughter of Scott Lang, the character first appeared in Marvel Premiere #47 (April 1979) as Cassie Lang and in Young Avengers #6 (May 2006) as Stature. 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.