Ant-Man is the name of several superheroes appearing in books published by Marvel Comics. Created by Stan Lee, Larry Lieber and Jack Kirby, Ant-Man's first appearance was in Tales to Astonish #35 (September 1962). The persona was originally the brilliant scientist Hank Pym's superhero alias after inventing a substance that can change size, but reformed thieves Scott Lang and Eric O'Grady also took on the mantle after the original changed his superhero identity to various other aliases, such as Giant-Man, Goliath, and Yellowjacket. Ant-Man has appeared in several films based on the Marvel character, such as Ant-Man (2015), Captain America: Civil War (2016), Ant-Man and the Wasp (2018), and Avengers: Endgame (2019).

Scott Lang was a thief who became Ant-Man after stealing the Ant-Man suit to save his daughter Cassandra "Cassie" Lang from a heart condition. Reforming from his life of crime, Lang soon took on a full-time career as Ant-Man with the encouragement of Hank Pym. He became an affiliate of the Fantastic Four, and later became a full-time member of the Avengers. For a period of time he dated Jessica Jones. He was killed by the Scarlet Witch along with the Vision and Hawkeye in Avengers Disassembled,^[8] and his daughter took up his heroic mantle as Stature in the book Young Avengers. He returned to life in 2011 in the mini series, The Children's Crusade, but lost his daughter when she heroically sacrificed herself to stop a super charged Doctor Doom, who would later revive her during the AXIS.