A.R.G.U.S.

Advanced Research Group United Support, initialized as A.R.G.U.S., is a research group running in the United States and special ops division of the government, taking down terrorist threats in secrecy and without public knowledge. However they are willing to let vigilantes such as Green Arrow and the Flash operate without interference, as their work does benefit their respective cities they operate in.

History
A.R.G.U.S was formed by a group of officials in the U.S. government to deal with major threats like the League of Assassins, H.I.V.E. or the Church of Blood.

A.R.G.U.S has been using the same flanking patterns for years, so much so that Oliver was able to identify A.R.G.U.S agents simply by it from his past experience with them.

Oliver has occasionally interfered in A.R.G.U.S. business, due to his bad experience with the organization, as he does not trust their intentions.

After the death of Amanda Waller, Lyla Michaels was made the new head of A.R.G.U.S. She looked into "cleaning" all of Amanda's past mistakes.

The main A.R.G.U.S. building became secured with new security cards, access codes, retinal scanners as well as meta-human power dampeners.

Overview
Under the leadership of the immoral Amanda Waller, the organization became very questionable if not excessive in its methods. At times they became no better than the very threats they are supposed to protect the U.S. from, committing unspeakable acts with no regard for human life. This includes the extortion of whomever is convenient to their benefits, usually threatening their family members if they don't comply. They also used felons for Task Force X to carry out life-threatening operations in exchange for working off their sentencing. They were even willing to order a drone to destroy Star City in order to stop Slade Wilson's army from leaving. When meta-humans started emerging, A.R.G.U.S. even began to study them in order to weaponize their abilities.

Following the death of Amanda, Lyla Michaels becomes the new director of A.R.G.U.S., reforming the organization, as everything they do is now based on morals, principles and the value of human life and no longer using criminals or unwilling individuals for their benefit. It also seeks to rehabilitate criminals rather than weaponize them. At the same time however, Lyla's new position of authority also has forced her into various difficult situations, making decisions at times that would more closely follow Waller's protocol, such as holding dangerous terrorists in prison without trials or stealing secrets and technology from even allies.

Current members

 * Lyla Michaels/Harbinger (director)
 * Erkin Aycan
 * David Ferreira
 * Patrick Gray
 * Jody Lavoie
 * John Carron
 * Diana Patterson
 * Sandhano Schhi Tze
 * Tom Scull
 * Rob Sykes
 * Jonathan Turton
 * Patti Wilson

Former members

 * Alan Chang (deceased)
 * John Diggle/Freelancer
 * John Le (missing)
 * Jordan Pierce (deceased)
 * Oliver Queen
 * Mark Shaw
 * Tim Sullivan (missing)
 * Amanda Waller/Mockingbird (director; deceased)
 * Kai Wu (deceased)
 * Maseo Yamashiro/Sarab (left the organization; prior to his death)
 * Tatsu Yamashiro (left the organization)

Current enemies

 * Laurel Lance/Black Siren

Former enemies

 * Joseph Cray (incarcerated)
 * Shay Lamden/King Shark (incarcerated; later turned into "guard" of A.R.G.U.S.)
 * Grodd (incarcerated)
 * Floyd Lawton/Deadshot (deceased)
 * Eobard Thawne/Reverse-Flash (erased from existence)
 * Shay Lamden/King Shark (non-canon; incarcerated)
 * Cheetah (incarcerated)
 * Shadowspire
 * Joyner (incarcerated)

Current allies

 * Team Arrow
 * John Diggle/Spartan
 * Quentin Lance
 * Oliver Queen/Green Arrow
 * Thea Queen/Speedy
 * Felicity Smoak/Overwatch
 * Team Flash
 * Barry Allen/The Flash
 * Cisco Ramon/Vibe
 * Dr. Caitlin Snow/Killer Frost
 * Dr. Harrison Wells
 * Iris West
 * Police Detective Joe West
 * Jesse Quick

Former allies

 * Laurel Lance/Black Canary (member of Team Arrow; deceased)

Arrow
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Season 5
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The Flash
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Season 3
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Arrow: Season 2.5

 * "Acolyte" (Suicide Squad: Crisis in Kahndaq)
 * "Awakenings" (Suicide Squad: Crisis in Kahndaq)

The Flash: Season Zero

 * "Fish Fry"
 * "A Little Help From Some Friends"
 * "The Impossible Mission"
 * "A Minor Setback"
 * "A New Home"
 * Mentors and Meltdowns part 2

Trivia

 * It was revealed that under Amanda Waller's direction, A.R.G.U.S. was well aware of Oliver Queen's secret identity, the Arrow, and they knew that John Diggle worked with him.
 * It was also revealed that A.R.G.U.S. was fully aware of Sara Lance's secret identity as the Canary.

Behind the scenes

 * In the DC Comics multiverse, A.R.G.U.S. (which stands for Advanced Research Group Uniting Super-Humans) unites super-humans in a world in which they're not seen as normal.
 * The building which A.R.G.U.S.' headquarters is based out of is the Capital Museum in real life.