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Colonel Walker

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And I'll carry that with me till the day I die! Until that day comes I'm gonna be a very, very wealthy man...
~ Walker to Diggle

Colonel Walker is a villain in the fifth season of Arrow and acts as an antagonist to John Diggle. Walker is portrayed by Garry Chalk.


In a military briefing, Colonel Walker informs a team that a military trigger, remaining from one of the nukes that fell at Genesis Day, is about to be obtained by Chechen rebels. Calling it a standard retreival and extraction mission, Walker gives Diggle command of the mission.

During the mission, Diggle and his men are able to defeat the terrorists. After Diggle has tended to the wounds of one of his men, the two separate and try to sweep the corridors. While doing so, Diggle hears the voice of Walker and, believing him to be an ally, reveals himself to Walker. However, Walker's men disarm Diggle and Walker reveals that he has not come to secure, but to sell the trigger. Diggle calls it theft but Walker replies that you can't steal what nobody owns. He also warns Diggle to remain quiet, claiming that Diggle might just live through the situation should he remain calm.

While Walker and his men are waiting for their contacts, Walker sends two of his men to check the roof. When the two are gone, Diggle angrily accuses Walker of having murdered his own soldiers by having them walk into an ambush. Walker replies that he will carry that burden with him to the day he dies, but that he will be a wealthy man until that day comes. When Diggle reminds Walker of the oath he has sworn to his country, Walker angrily replies that, while he was able to take on enemies like Al-Quaida and the Taliban, he sees no chance of defeating meta-humans and users of magic.

Walker's men soon return, having captured Diggle's remaining teammate. Walker shoots the man with Diggle's gun. He tells Diggle that he realises that his contacts will never show up, as Diggle must have killed them before. He claims that Diggle's presence will nonetheless prove to be useful and knocks out Diggle. Diggle regains consciousness on the military base, where Walker is standing next to him. Walker hands the cuffed Diggle a paper, revealing that it is supposed to be Diggle's confession. Diggle spits on the confession and Walker urges him to reconsider, claiming that he shot the private with Diggle's gun and that he will turn the story so that Diggle turns out to be the one who tried to illegally obtain and sell the trigger. Walker also claims that his corrupt soldiers will also testify against Walker.



Arrowverse Villains

Adam Hunt | Al-Owal | Amanda Waller | Anatoli Knyazev | Andrew Diggle | Baron Reiter | Billy Wintergreen | Bronze Tiger | Brother Blood | Cyrus Gold | Calculator | Captain Boomerang | Carrie Cutter | Chase | China White | Conklin | Cooper Seldon | Count Vertigo | Cyrus Vanch | Constantine Drakon | Damien Darhk | Danny Brickwell | Deadshot | Derek Sampson | Demolition Team | Dollmaker | Edward Fyers | Edward Rasmus | H.I.V.E. | Huntress | Isabel Rochev | Jake Simmons | Janet Carroll | Jeremy Tell | Joseph Cray | Joyner | Komodo | League of Assassins | Liza Warner | Lonnie Machin | Malcolm Merlyn | Maseo Yamashiro | Matthew Shreive | Michael Amar | Milo Armitage | Mina Fayad | Nyssa al Ghul | Officer Daily | Phaedra Nixon | Professor Ivo | Prometheus | Ragman | Ra's al Ghul | Rogue Anti-Vigilante Task Force | Royal Flush Gang | Ruvé Darhk | Shadowspire | Shrapnel | Slade Wilson | Suicide Squad | The Mayor | Tobias Church | Vivian | Walker | Werner Zytle | William Tockman

The Flash
Alchemy | Atom-Smasher | Axel Walker | Brie Larvan | Clay Parker | Clyde Mardon | Danton Black | Deathstorm | Dr. Light | Eobard Thawne | Everyman | Farooq Gibran | General Wade Eiling | Geomancer | Griffin Grey | Grodd | Henry Hewitt | Killer Frost | King Shark | Kyle Nimbus | Leonard Snart | Lewis Snart | Magenta | Mark Mardon | Mick Rory | Pied Piper | Reverb | The Rival | Rogues | Roy Bivolo | Rupture | Sand Demon | Shawna Baez | Simon Stagg | Tar Pit | The Trickster | The Turtle | Tony Woodward | Trajectory | Vincent Santini | Zoom

Felix Faust | Nergal

Legends of Tomorrow
Bud Ellison | Cassandra Savage | Chronos | Colonel | Damien Darhk | Eobard Thawne | Grant Wilson | Hawk-Beasts | The Hunters | John Valor | Krieger | The Leviathan | Mr. Blake | Per Degaton | The Pilgrim | Stillwater Gang | Valentina Vostok | Vandal Savage | Zaman Druce

Astra | Colonel James Harper | Dirk Armstrong | Ethan Knox | The Hellgrammite | Indigo | Jemm | Livewire | Maxwell Lord | Metallo | Non | Reactron | Red Tornado | Siobhan Smythe | T.O. Morrow | Vartox

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