S.H.I.E.L.D.

S.H.I.E.L.D. (Strategic Homeland Intervention, Enforcement and Logistics Division) is a counterterrorism and intelligence agency run by Nick Fury.

Captain America: The First Avenger
S.H.I.E.L.D was co-founded by Howard Stark and possibly Nick Fury more than twenty years before the events involving the creation Iron Man armor.

Iron Man
S.H.I.E.L.D. wishes to debrief Stark about his escape from Afghanistan and arrests Obadiah Stane for planning the kidnap and murder of Tony Stark as well as dealing weapons to terrorists. It also provides a cover story for what happened at Stark Industries during Iron Man and Iron Monger's fight, a story that Stark does not stick to instead revealing his secret to the world.

Iron Man 2
S.H.I.E.L.D. recruits Tony Stark as a consultant for the Avenger Initiative and organizes Senator Stern to present Tony Stark and James Rhodes with their medals. S.H.I.E.L.D. sends agent Coulson to New Mexico to find Mjolnir

The Incredible Hulk
General Ross enlists the help of S.H.I.E.L.D. to help him track Bruce Banner's e-mails to "Mr. Blue".

Thor
S.H.I.E.L.D. had taken all of Jane Foster's Thor fights with some of Agent Coulson's men before being captured and interrogated by Coulson about his identity, origin and training. Mjolnir is also kept in a S.H.I.E.L.D. facility. Loki send The Destroyer to attack Thor and S.H.I.E.L.D. agents, after The Destoryer was defeated Thr told Coulson to return Jane's work. In a post-credits scene, Dr. Selvig is taken to a S.H.I.E.L.D. facility where he meets Nick Fury. Fury asks Selvig to study the recently-discovered Cosmic Cube, which holds untold power, to which Selvig agrees. It is then revealed that Selvig is under the control of Loki, who has been transported to Earth.

Marvel Cinematic Universe

 * Nick Fury
 * Black Widow
 * Phil Coulson
 * Clint Barton
 * Dum Dum Dugan
 * Maria Hill
 * Jasper Sitwell

Former

 * Howard Stark (Deceased)