D.E.O.

"Welcome to the D.E.O., the Department of Extra-Normal Operations. The D.E.O. monitors and protects Earth from extraterrestrial presence and/or invasion. That means you."

- J'onn J'onzz to Supergirl

The Department of Extra-Normal Operations, simply known as the D.E.O., is a governmental organization created following Superman's arrival on Earth to monitor extraterrestrial presence on the planet. It was formerly led by Director Hank Henshaw until he was presumably killed by Jeremiah Danvers in order to save the alien fugitive J'onn J'onzz, who began posing as Henshaw to reform the D.E.O. for its intended purpose. After his identity was exposed, Lucy Lane was named deputy director. However, after helping Supergirl defeat Non and Indigo, J'onn received a presidential pardon and was reinstated as director of the D.E.O., continuing to use Hank's appearance for convenience sake around D.E.O. agents and for public appearances.

History
Following Kal-El's arrival on Earth, the United States government decided that they needed to protect themselves against extra-terrestrial presence, and potential invasion, so they created the Department of Extra-Normal Operations.

24 years later after Fort Rozz crashed on Earth, they began to catalog all of the aliens seen in public.

12 years later, the D.E.O. captured Kara Danvers. She was made aware of the department's existence, and their motives. Though they initially didn't work well, "Hank Henshaw" allowed Kara to take down Vartox, an alien threat, as Supergirl.

Current members

 * Alex Danvers (director, doctor, and bio-engineer)
 * Vasquez (field operative)
 * Hix (field operative)
 * Igle (field operative)
 * Price (field operative)
 * Valdes (field operative)
 * Hartmann (field operative)
 * Pam (HR)
 * Amelia Hamilton (doctor)
 * Querl Dox/Brainiac 5 (technician and future knowledge)
 * Lauren Haley (overseer)
 * Lawrence
 * Reiff
 * Wolf

Former members

 * Hank Henshaw (director; betrayed)
 * Jeremiah Danvers (forcibly defected to Cadmus)
 * Lucy Lane (former deputy director)
 * Donovan (deceased)
 * J. McGill (deceased)
 * Reynolds (deceased)
 * Tsung (deceased)
 * Demos (deceased)
 * Mon-El (field agent; left to rejoin the Legion)
 * Winn Schott (technician; left to join the Legion)
 * J'onn J'onzz/Martian Manhunter (director; stepped down and left to honor his father's wishes)
 * Raymond Jensen (betrayed)
 * Taylor  (betrayed; deceased)
 * Kara Danvers/Supergirl (employment terminated by President Baker)

Current enemies

 * Project Cadmus
 * Hank Henshaw/Cyborg Superman
 * Children of Liberty
 * Ben Lockwood/Agent Liberty (leader)

Former enemies

 * Armek (deceased)
 * Children of Juru
 * Selena (incarcerated)
 * Vita (incarcerated)
 * Ayala (incarcerated)
 * Worldkillers
 * Julia Freeman/Purity (deceased)
 * Grace Parker/Pestilence (deceased)
 * Samantha Arias/Reign (Kryptonian-half deceased)
 * Project Cadmus members
 * Lillian Luthor (incarcerated)
 * Daxamite army
 * Queen Rhea (leader; deceased)
 * Daxamite invaders (invasion force; retreated)
 * Astra and Non's army (inactive)
 * Astra (leader; deceased)
 * Non (leader; status unknown)
 * The Commander
 * Gor
 * Mur
 * Tor
 * Hellgrammite (incarcerated)
 * Brainiac 8/Indigo (deceased)
 * Leslie Willis/Livewire (turned ally; deceased)
 * Ethan Knox (deceased)
 * Jane Doe/Bizzaro (comatose)
 * Jeremiah Danvers (briefly)
 * Draaga (incarcerated)
 * Jemm (deceased)
 * Rudy Jones/Parasite (deceased)
 * K'hund (incarcerated)
 * Ben Krull/Reactron (incarcerated)
 * Maxima (incarcerated)
 * Maxwell Lord
 * Gilcrist/Metallo (deceased)
 * John Corben/Metallo (deceased)
 * T.O. Morrow (deceased)
 * Red Tornado (destroyed)
 * Maaldorian doctor (deceased)
 * Master Jailer (incarcerated)
 * J. McGill (deceased)
 * Psychic Fort Rozz escapee (deceased)
 * Unnamed White Martian (incarcerated)
 * Winslow Schott Sr./Toyman (deceased)
 * Scorcher (incarcerated)
 * Veronica Sinclair/Roulette (stranded on Maaldoria)
 * Siobhan Smythe/Silver Banshee (incarcerated)
 * Vartox (deceased)
 * Children of Liberty members
 * Mercy Graves  (deceased)
 * Otis Graves  (deceased)
 * Taylor  (former D.E.O. agent, deceased)
 * Raymond Jensen (former D.E.O. agent; incarcerated)
 * Dean Petrocelli (deceased)
 * George Lockwood (left as a result of being disillusioned by his father)
 * Kopy (incarcerated)

Trivia

 * Since the Children of Liberty's emergence, the D.E.O. is slowly being warped into a less effective organization due to president Baker's interference in order to get the public back on his side.

Supergirl
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Season 4
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Behind the scenes

 * In the DC comics, the D.E.O. tracks, investigates and processes meta-human activities and persons.