Who is Sidewinder? Marvel star Giancarlo Esposito explains how his ‘Captain America: Brave New World’ villain, the leader of the Serpent Society, is a “complicated” and “physical guy.” Who is Sidewinder? Marvel star Giancarlo Esposito explains how his ‘Captain America: Brave New World’ villain, the leader of the Serpent Society, is a “complicated” and “physical guy.” Read More