MARVEL'S AGENTS OF S.H.I.E.L.D. - ABCs "Marvel's Agents of S.H.I.E.L.D.Ó stars Henry Simmons as Alphonso "Mack" MacKenzie, Natalia Cordova-Buckley as Elena "Yo-Yo" Rodriguez, Chloe Bennet as Daisy Johnson, Clark Gregg as Phil Coulson, Ming-Na Wen as Melinda May, Iain De Caestecker as Leo Fitz, and Elizabeth Henstridge as Jemma Simmons. (ABC/Matthias Clamer)