Leo Fitz is a brilliant engineer, able to envision and design a wide array of devices for use in the field. His quick thinking and ability to improvise have gotten the S.H.I.E.L.D. team out of a number of tight situations. Fitz has proved he is willing to sacrifice everything for his teammates, especially his research partner, Jemma Simmons.
Played by Iain De Caestecker (The Fades, The Little Vampire, Billy and Zorba).