S.H.I.E.L.D. is a Marvel Comics fictional advanced counterterrorism and intelligence agency charged with investigating and neutralizing paranormal and superhuman threats for global security. It was created by Stan Lee and Jack Kirby in Strange Tales #135 (August 1965) and appeared throughout the publisher's entire comic book line. The agency and its traditional executive director, Nick Fury, have also starred in their own series and miniseries sporadically since that time, most notably during a late-1960s run by writer-artist Jim Steranko.

Three official continuity versions of S.H.I.E.L.D. are listed here: the traditional version in mainstream Marvel Universe continuity, followed by the alternate reality version published under the Ultimate Marvel imprint, as well as the Marvel Cinematic Universe version. Amalgam Comics, a joint venture between Marvel and DC Comics, have their own version of S.H.I.E.L.D. that combines characters from both publishers. An example of this would be Super Soldier, who possesses an amalgamation of the superpowers of Superman and Captain America.

Marvel Universe S.H.I.E.L.D. Executive Directors and Secretaries Colonel Rick Stoner – First known executive director. Assassinated by the terrorist group Hydra. Colonel Nick FurySgt. Fury and his Howling Commandos #1 (July 1963) – Second known executive director. Level 10 Agent. Timothy "Dum Dum" Dugan – Third known executive director. Former Corporal of Fury's World War II squad. G. W. BridgeX-Force #1 (August 1991) – Fourth known executive director. Sharon Carter (Agent 13)Tales of Suspense #75 (March 1966) – Fifth known executive director. She is often detailed as liaison officer to Captain America. Maria HillSecret War #5 (December 2005) – Sixth known executive director. Level 9 Agent. Anthony Edward "Tony" Stark (Iron Man)Tales of Suspense #39 (March 1963) – Seventh known executive director. Takes up the position after the Civil War. Norman OsbornSecret Invasion #8 (December 2008) – Eighth known executive director. Takes up position after Secret Invasion. Dismantles S.H.I.E.L.D. and renames it H.A.M.M.E.R. Commander Steve Rogers (Captain America)Siege #4 (May 2010) – Ninth known executive director. Assigned as "America's top cop" following the Siege of Asgard, the arrest of Norman Osborn, the dismantling of H.A.M.M.E.R., and the repeal of the Superhuman Registration Act. He was later reappointed during the Secret Empire storyline where a Hydra-controlled S.H.I.E.L.D. takes over the United States and is later disbanded. Daisy Johnson (Quake)The Avengers – Tenth known executive director. Former protégé of Nick Fury and daughter of Calvin Zabo/Mister Hyde. Phil Coulson – Level 8 Agent. Seth Burnett – Level 12 Agent

Notable Agents (Pre-Civil War) Agent 22Thunderstrike #13 (October 1994) Agent 74 – Sent to battle Vamp to demonstrate her abilities to Captain America. Agent MMicronauts #12 (December 1979) – Expert in the Microverse. John Allen AdamsNick Fury vs. S.H.I.E.L.D. #3 (August 1988) – Head of ESP squad. Agent Boyer undercover unit, dating Joe Dr. AmesMarvel Team-Up #83 (July 1979) – Medical surgeon stationed at Central. Anderson Earl Angstrum – Senior agent. His son was killed by the mutation of former Deathlok John Kelly (Biohazard). ArtieSpider-Man Unlimited vol. 2 #14 (May 2006) – Member of S.H.I.E.L.D.'s Superhuman Cleanup Department of Sanitation (SCUDS). Ashton – He is in charge of securing the alien spaceship of Golden Blade and Sapper. Ken AverySabretooth and Mystique #1 (December 1996) – Thirty-year veteran. A senior officer aboard the Helicarrier. BainbridgePunisher vol. 3 #12 (March 2001) BalabanX-Force #4 (November 1991) – Serving on the Helicarrier with G. W. Bridge. Baker – Stationed aboard the Helicarrier. Ted Bailey – Stationed at front company D-Fleks Industries. Briefly carried consciousness of Jack Truman. Beefcake – LMD assigned to the Hulkbusters unit. Bradley BeemerNick Fury's Howling Commandos #1 (December 2005) – Part of the Howling Commandos monster force. He is also the Area 13 technical chief. BelliniWolverine/Nick Fury: The Scorpio Connection (1989) – Ranking officer at the Venice, Italy, station. Berdino Berger – Formerly stationed in a training camp in Saudi Arabia. She accompanied Nick Fury to investigate a base in the Middle East. BillStrange Tales #137 (October 1965) – Partner of Joe. He picked up Agent L's microfilm from unnamed agents, but blew up his own car to stop Hydra agents. It is unknown if he survived. Blake Sally Blevins (Skids)Uncanny X-Men vol. 1 #489 (2007) – A mutant who infiltrated two factions of the Morlocks, later involved in intrigue among Hawkeye, the Winter Soldier, and Black Widow.Tales of Suspense #104 (2018) Boothroyd – Administrator in charge of personal effects department. Probable transfer from MI-6. Could also be a reference to Major Boothroyd, the equipment officer code-named "Q" in the James Bond movie series. Abigail Brand – Head of S.W.O.R.D. (Sentient World Observation and Response Department), a subdivision of S.H.I.E.L.D. She is a hybrid mutant and alien. Joseph Bricklemoore – Agent of the Mutant Task Force that infiltrated the Jean Grey School Student Body by using MGH (Mutant Growth Hormone) to become the mutate Tri-Joey. Josephine Bricklemoore – Agent of the Mutant Task Force that infiltrated the Jean Grey School Student Body by using MGH (Mutant Growth Hormone) to become the mutate Squidface. Bubba – Member of S.H.I.E.L.D.'s Alpha Team. Barth BukowskiSpider-Woman #13 (April 1979) – Regional Director in Los Angeles. Jenna Carlisle – Forensics agent and adrenaline junkie. Mitch CarsonThe Irredeemable Ant-Man #1 (December 2006) – Security agent under Dum Dum Dugan. Carstairs – Member of the Alpha Team Armored Squad. Monica Chang – Chief of S.H.I.E.L.D.'s Artificial Intelligence division. Cheesecake – LMD assigned to the Hulkbusters unit. Isadore "Izzy" Cohen – Former private first class in Fury's World War II squad. Agent of S.H.I.E.L.D. Colburn – Agent who noted traffic on the Project Contingency files at HQ. Colletti – Member of the Alpha Team Armored Squad. William CollinsSuper Villain Team-Up #17 (June 1980) – Division commander who led the battle to raze the slave-camp island of the Red Skull and the Hate-Monger. Phil Coulson - Also known as the Agent, he is the main Agent of the Marvel Cinematic Universe. CrimsonShe-Hulk vol. 2 #15 (March 2007) – Head of Magic-Ops division and assigned to the Hulkbusters unit. Cross – Friend of Contessa Valentina. Valentina Allegra de FontaineAs spelled officially by Marvel Comics on its S.H.I.E.L.D. page, although misspelled with a male name and spelled with a different Italian article as "Valentina Allegro de Fontaine" in her name's first two mentions, in Strange Tales #159, "Spy School", p.10, panel 6, and Strange Tales #162, "So Evil, the Night", p.3, panel 6.Strange Tales #159 (August 1967) – Former Special Director at Public Relations. Senior liaison officer to MI5. Level 9 agent. Revealed to have been replaced by a Skrull. Jessica DrewMarvel Spotlight #32 (February 1977) – The original Spider-Woman. Level 7 agent. Stanley Dreyfuss – Elektra's contact on Operation: Lock Kiss. Later learns he is a Life Model Decoy. Joanie "Nails" Eaton – Member of the Elite Agents. John Facchino – Human resources department. Rigby Fallon – Boy genius in the Artificial Intelligence division. Wrote most of the programs for the latter-day Helicarrier. Farrell – Member of the Alpha Team Armored Squad. E.B. Farrell – Weapons expert for the Elite Agents. Calls himself "the Kid". Fisher – Dawn Helicarrier technician. Nick Fury Jr.Battle Scars #6 – Son of Nick Fury. Also known as Marcus Johnson. Gerrard – Field agent for the Foreign Affairs office. Giulietta – Technician at the Venice, Italy, station. Gomez – Member of the Alpha Team Armored Squad. Herrick Goldman – Among group of renegade agents attempting to take over the Helicarrier for the impromptu war crimes trial of a KGB agent. Hazeltine – Intelligence agent at Central. Hugh Howard – Pilot and mechanic aboard Behemoth IV Helicarrier, charged with capturing Godzilla. The name is a reference to aviator, engineer, and multi-billionaire Howard Hughes. Jerry HuntSpider-Woman #1 (April 1978) – Agent assigned to Scotland Yard. Former lover of Jessica Drew. Horatio Huxley – Ranking executive of Level 13. He was previously involved in Alpha Flight. Jackson – Pilot in Unit 6 of the Air Cavalry. Karl Janáček – Rank L-3. Valerie Jessup Toomes – Daughter of supervillain the Vulture. JohnsonThor #283 (May 1979) – Attempted to free agents from the City of the Space Gods. Daisy JohnsonSecret War #1 (April 2004) – Seismic-powered "super-agent". She is the only known agent with "Level 10" security clearance aside from Fury and the Black Widow (Natasha Romanova). Jones (Jonesy)The Incredible Hulk vol. 2 #411 (November 1993) – Youthful field agent involved in the operations against the Pantheon and the Punisher.The Incredible Hulk vol. 2 #433 (September 1995) Gabriel "Gabe" Jones – Former private first class in Fury's World War II squad. KallebachNick Fury: Agent of S.H.I.E.L.D. vol. 2 #24 (June 1991) – Field agent during investigation of assassinations at J-2 conference. Kelso – Pilot in Unit 6 of the Air Cavalry. Derek Khanata – Ex-Hatut Zeraze operative from Wakanda. He was Carmilla Black's carrier and the senior investigator on the "Agents of Atlas" cases. After S.H.I.E.L.D. is dismantled, he later joins the group.Agents of Atlas vol. 2, #7 (September 2009) Helen KimMarvel Knights vol. 2 #1-5 (May–September 2002) – Agent investigating the Brothers Grace crime family. Veronica King Judith Klemmer (Agent 324)Marvel Team-Up #36-37 (August–September 1975) – Agent charged with tracking down Baron Ludwig von Schtupf, a.k.a. the Monster-Maker. – Grade T-7 technician. Became field agent and helped capture supervillain Cache. Eric Koenig – German defector. He was a replacement member of the World War II Howling Commandos. Ali Kokmen – Interfered with Khanata in the Scorpion affair. Bruno KreahNick Fury: Agent of S.H.I.E.L.D. vol. 2 #15 (September 1990) – Low-level engineer. He worked on the surveillance equipment used to infiltrate Datalink Systems. Sayuri Kyota (M-80) – Demolitions expert of the Elite Agents. Sidney "Gaffer" Levine – Primary ordnance inventor and gadgeteer. Charles Little Sky – Mutant Director of A.R.M.O.R. Alphonso "Mac" MacKenzieMarvel Comics Presents #3 (September 1988) – Senior liaison officer to CIA. Dr. Myron MacLainThe Avengers #67 (August 1969) – High-ranking scientist who is a seminal adamantium researcher. Dino Manelli – Former private in Fury's World War II squad. He was an Italian-American star. Kirby MartellWar Machine #15 (June 1995) – S.H.I.E.L.D. scientist. She operated a captured neo-Nazi time machine. Tony MastersTaskmaster vol. 2 #3-4 (2010-2011) – An agent of S.H.I.E.L.D. who would go on to become the Taskmaster. Because of his abilities, Masters has forgotten his S.H.I.E.L.D. past and unknowingly works as an undercover agent. Chastity McBryde – Squad leader. Fought against Elektra and other rogues that S.H.I.E.L.D. suspected to be Elektra's accomplices. Chris McCarthy – Low-level agent. He was the first person to wear Hank Pym's 2006 Ant-Man suit. Mercedes Merced – Undercover agent and Taskmaster's handler. Alisanda "Ali" Morales – Undercover in Cuba. She helped Captain America and Falcon track down "Anti-Cap". Stayed with S.H.I.E.L.D. when it became H.A.M.M.E.R. Murray – Agent working in reactor core of Central. Kate Neville - Aid to Nick Fury and trained marksman. Killed by Baron Strucker.Nick Fury, Agent of S.H.I.E.L.D. (Vol. 3) #47 N'GamiNick Fury, Agent of S.H.I.E.L.D. vol. 2 #12 (June 1990) – Technological advisor and a Wakandan government liaison officer.