 She first appeared as Stature in "Young Avengers" #6 (May 2006), and adopted the identity of Stinger in "The Astonishing Ant-Man" #6 (May 2016).Cassie Lang is introduced to the Marvel Universe as the ill daughter of Scott Lang.Her congenital heart condition forces her father to steal Hank Pym's Ant-Man equipment and Pym Particles, which he uses to rescue Doctor Sondheim, the only doctor able to cure Cassie's condition, from Cross Technological Enterprises.