Look at my face. Look what they did to me. Now, I wore that mask to protect me and my family because there are aliens who don't like to hear what I believe, don't like to hear the truth, so I'm cards up. What about Supergirl, huh? You know who I am. Who is she?
~ Agent Liberty

Benjamin "Ben" Lockwood, also known as Agent Liberty, is one of the three secondary antagonists of the fourth season of Supergirl (the others being Red Daughter and Eve Teschmacher). He is the leader of the Children of Liberty, a vastly growing anti-alien extremist organization bent on sabotaging the Alien Amnesty Act and getting rid of every alien in America.

He was portrayed by Sam Witwer who previously portrayed Davis Bloome/Doomsday in Smallville and he plays Darth Sidious in various Star Wars media


Ben was a history professor at National City University], living with his wife Lydia], his son George, and his father Peter. He had helped his father out at his steel factory for some time, even negotiating with Lena Luthor for help with the factory.

He founded the Children of Liberty, mostly comprising of the remnants of Project Cadmus. He employed Mercy and Otis Graves to steal an EMP from an alien scientist. His father is the main reason he started the anti-alien movement. At dinner with his family, the news showed Supergirl trying to snap the city out of Myriad, but Peter didn't approve of Supergirl and the Alien Amnesty Act, hating so much of aliens that he wouldn't accept material from them. Ben tried to convince him otherwise, but his father wouldn't have it.

However, after their argument, a fight at the Nth Metal Factory across the street included a fight between Peter's workers and two aliens at the factory, one of whom ended up accidentally shooting Ben in the chest. Supergirl arrived at the scene to break up the situation and Agent Alex Danvers helped deal with Ben's wounds. Later, Ben had bad luck when Lena denied any help for his father.

Ben was finally arrested and exposed as the Agent of Liberty. After he was arrested, the people are against Supergirl and CatCo media in "Bunker Hill".

In the second half of the fourth season, President Baker is anti-alien and also a supporter of Ben Lockwood.  He found a loophole to grant his pardon. The President appointed him Director of Alien Affairs. So he and the rest of the children of liberty gets to finish repealing the Alien Amnesty Act. In All About Eve, the Alien Amnesty Act was officially repealed.  He is unaware that he and the Children of Liberty are all patsy's aka pawns of Lex Luthor.  In the end of Lex Luthor's tyranny, Lex Luthor is dead and President Baker is impeached.  The Alien Amnesty Act is reinstated and Ben is back in prison and his son is now an alien supporter.  Ben was not only trapped in his own father's hate and in the end he end up back in jail, but his misguided anti-alien crusade lead to his son hating him thus becoming estranged from him. 


  • Fiona
  • Otis Graves


  • He is the first male main antagonist in Supergirl as the previous main antagonists (Astra, LillianRhea, Reign, and Selena) were all female. Though Non arguably became the main antagonist of Season 1 after Astra's death.
    • He is also the second main antagonist introduced in Supergirl to be a human, after Lillian Luthor.
  • Unlike the previous antagonists of the series, he has complete support from the people of National City, with his support growing in number faster since his incarceration.
  • He is similar to The Flash main antagonist Cicada, as both characters lost a family member and harbor hatred of metahumans and aliens which leads to them becoming villains.
    • however, unlike Cicada, Agent Liberty has support from many citizens of his city and country.
  • He was considered the main antagonist in Supergirl season 4, but in the House Of L, he was revealed to be the unwitting "patsy" of the real big bad, Lex Luthor.
  • He shares the same name as James Cromwell's character in Jurassic World: Fallen Kingdom.
  • Lockwood/Agent Liberty is similar to John Frederick Paxton from Star Trek: Enterprise:
    • Paxton originally studied to be a historian; Ben is a former history professor.
    • Both men are the leaders of anti-alien extremist groups (Terra Prime for Paxton, the Children of Liberty for Ben).
    • Both men are hypocrites who use alien technology despite being opposed to any alien influence (Paxton used Rigelian gene therapy on himself to treat an illness; Ben used an alien parasite in one of his schemes).
    • Both men were involved in manual labor (Paxton ran a lunar mining colony he inherited from his father; Ben's father was a factory worker).


           Supergirl second logo TV Villains

Season 1
Astra and Non's Army (Non, Astra, Indigo, Vartox, Hellgrammite, & Maxima) | Maxwell Lord | Reactron | Livewire | Ethan Knox | Red Tornado | T.O. Morrow | Jemm | Dirk Armstrong | Bizarro | Toyman | Miranda Crane | Master Jailer | Silver Banshee | Colonel James Harper

Season 2
Rhea | Project Cadmus (Lillian Luthor, Cyborg Superman, & John Corben) | Scorcher | Roulette | Parasite | Dominators | Phillip Karnowsky | Mister Mxyzptlk | Music Meister | Beth Breen | Rick Malverne

Season 3
Worldkillers (Selena, Reign, Purity, Pestilence, & Thomas Coville) | Morgan Edge | Bloodsport | Psi | New Reich (Black Arrow, Overgirl, & Prometheus (Earth-X)) | Eobard Thawne

Season 4
Lex Luthor | Children of Liberty (Agent Liberty, Mercy Graves, Raymond Jensen, & Natalie Hawkings) | Otis Graves | The Elite (Manchester Black, Pamela Ferrer, The Hat, & Morae) | Mar Novu | John Deegan | A.M.A.Z.O. | Psycho-Pirate | Eve Teschmacher | Red Daughter | Phil Baker

           Arrowverse Villains

Adam Hunt | Al-Owal | Alex Faust | Amanda Waller | A.M.A.Z.O. | Anatoly Knyazev | Andrew Diggle | Anthony Ivo | Athena | Baron Reiter | Beatrice | Billy Wintergreen | Black Arrow | Black Siren | Bronze Tiger | Brother Blood | Calculator | Captain Boomerang | Cayden James | Chase | China White | Conklin | Cooper Seldon | Count Vertigo | Constantine Drakon | Cupid | Cyrus Gold | Damien Darhk | Danny Brickwell | Dante | Deadshot | Derek Sampson | Demolition Team | Dollmaker | Dominators | Edward Fyers | Emiko Queen | Evelyn Sharp | Firefly | Frank Bertinelli | Hideo Yamane | H.I.V.E. | Huntress | Isabel Rochev | Ishmael Gregor | Jackals | Jake Simmons | James Edlund | Janet Carroll | Jeremy Tell | Joe Wilson | John Deegan | John Diggle, Jr. | Joseph Cray | Joyner | Justin Claybourne | J.G. Walker | Keven Dale | Kimberly Hill | Kodiak | Komodo | Konstantin Kovar | Laura Washington | League of Assassins | Liza Warner | Longbow Hunters | Lonnie Machin | Malcolm Merlyn | Mar Novu | Martin Somers | Matthew Shrieve | Mayor | Michael Amar | Milo Armitage | Mina Fayad | Ninth Circle | Nylander | Nyssa al Ghul | Officer Daily | Oliver Queen | Onyx Adam's Team | Overgirl | Phaedra Nixon | Prometheus | Prometheus (Earth-X) | Psycho-Pirate | Quadrant | Quentin Lance (Earth-X) | Ragman | Ra's al Ghul | Red Dart | Ricardo Diaz | Rogue Anti-Vigilante Task Force | Royal Flush Gang | Ruvé Darhk | Sam Armand | Scimitar | Sean Sonus | Shadowspire | Sheck | Shrapnel | Silencer | Slade Wilson | Stanley Dover | Suicide Squad | Talia al Ghul | Tobias Church | Vigilante | Virgil | Werner Zytle | William Tockman

The Flash
Abra Kadabra | Alchemy | A.M.A.Z.O. | Amunet Black | Anthony Bellows | Atom-Smasher | Axel Walker | Black Arrow | Black Bison | Black Siren | Bloodwork | Brie Larvan | Captain Boomerang | Clay Parker | Clifford DeVoe | Clive Yorkin | Clyde Mardon | Crucifer | Danton Black | Dominators | Dr. Light | Eobard Thawne | Everyman | Farooq Gibran | General Wade Eiling | Geomancer | Godspeed | Grace Gibbons | Griffin Grey | Grodd | Henry Hewitt | John Deegan | Kilg%re | Killer Frost | Killer Frost (Earth-2) | King Shark | Kyle Nimbus | Leonard Snart | Lewis Snart | Lucius Coolidge | Magenta | Mar Novu | Mark Mardon | Marlize DeVoe | Matthew Norvock | Mick Rory | Mirror Master | Music Meister | Orlin Dwyer | Overgirl | Pied Piper | Plunder | Prank | Prometheus (Earth-X) | Psycho-Pirate | Quentin Lance (Earth-X) | Rag Doll | Reverb | The Rival | Roy Bivolo | Rupture | Samuroid | Sand Demon | Savitar | Shade | Shawna Baez | Simon Stagg | Siren-X | Solovar | Tar Pit | Time Wraiths | Trickster | Top | Turtle | Tony Woodward | Trajectory | Vincent Santini | Zoom

Legends of Tomorrow
Astra Logue | Benatu Eshu | Black Arrow | Black Flash | Bud Ellison | Cassandra Savage | Colonel | Damien Darhk | Dominators | Eobard Thawne | First of the Fallen | Grant Wilson | Henry Stein | Hawk-Beasts | The Hunters | John Valor | Kuasa | Krieger | Legion of Doom | Leviathan | Malcolm Merlyn | Mallus | Mar Novu | Mick Rory | Mr. Blake | Neron | Nora Darhk | Per Degaton | The Pilgrim | Overgirl | Prometheus (Earth-X) | Quentin Lance (Earth-X) | Quentin Turnbull | Samurai | Leonard Snart | Shogun | Stillwater Gang | Tabitha | Valentina Vostok | Vandal Savage | Zaman Druce

Agent Liberty | A.M.A.Z.O. | Astra | Beth Breen | Bizarro | Black Arrow | Bloodsport | Children of Liberty | Colonel James Harper | Cyborg Superman | Dirk Armstrong | Dominators | Eobard Thawne | Ethan Knox | Eve Teschmacher | Hellgrammite | Indigo | Jemm | John Corben | John Deegan | Livewire | Lex Luthor | Lillian Luthor | Manchester Black | Master Jailer | Mar Novu | Maxima | Maxwell Lord | Mercy Graves | Miranda Crane | Mister Mxyzptlk | Morae | Morgan Edge | Music Meister | Natalie Hawkings | Non | Otis Graves | Overgirl | Pamela Ferrer | Pestilence | Phil Baker | Phillip Karnowsky | Project Cadmus | Prometheus (Earth-X) | Psi | Psycho-Pirate | Purity | Raymond Jensen | Reactron | Red Daughter | Red Tornado | Reign | Rhea | Rick Malverne | Rudy Jones | Scorcher | Silver Banshee | T.O. Morrow | The Hat | Thomas Coville | Toyman | Vartox

Alice | Dodgson | Wonderland Gang

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