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"I don't need tricks, just collateral."
—Onyx Adams[src]

Onyx Adams is a former member of the League of Assassins and a former member of the United States Central Intelligence Agency's black ops squad until she deserted the organization and became a criminal.


Time with the League of Assassins

Onyx Adams' name seen in the Shadow Record.

According to the Shadow Record, Onyx Adams joined the League of Assassins in 1743. She was considered a member of the League all the way through the times of Rip Hunter's discovery of the Shadow Record and the writing of his thesis on the League's history.[1]

Working for CIA

At some point several centuries later, Onyx joined the United States' Central Intelligence Agency and became a black ops agent. She led a squad in undercover operations across the country of Syria. However, the squad deserted in 2015, stealing $100 million in Syrian government gold, disappearing from the eyes of American agents. Three of Onyx's squad's original members defected back to the CIA for a little while, before being murdered in gas attacks, likely organized by her crew as retaliation.[2]

Going rogue

Ever since the squad's disappearance, they began planning a ZX gas heist from Kord Industries, finding the tech they needed to accomplish this. The gas heist itself was a part of the operation to silence the defectors of Onyx's plan, and settle this grudge. Although Team Arrow was initially unable to stop the gas heist - thus making Onyx's squad think that the vigilantes were less than well-equipped to stop their operation - when the group finally moved to the plan to kill Rob Reynolds, the final defector, the vigilantes managed to stop the squad's lightning tricks.

Onyx was then cornered by the new Green Arrow and tried to escape his attention by enabling the gas trap and running away. However, Team Arrow managed to avert the spread of gas due to Black Canary's powers, while Green Arrow caught up to Onyx. She was about to finish off Reynolds, saying that while money can buy happiness, it can't buy her peace of mind, regarding him being a loose end. However, before Onyx could do so, Green Arrow finally apprehended her.[2]

Powers and abilities


  • Longevity: Despite having joined the League of Assassins in 1743, Onyx still maintains the physical appearance of a woman in her prime. It is possible that she used the waters of the Lazarus Pit to maintain her youth.[1]


  • Peak of human physical condition: As a former assassin and CIA agent, Onyx is in top physical condition.
  • Master hand-to-hand combatant/Martial artist: As a former member of the League of Assassins since 1743, hence having over centuries of combat experience, Onyx is an excellent hand-to-hand combatant and martial artist, having gone through the same training that all league members do. She furthered her abilities in combat, assassination and stealth while with the CIA. Onyx was able to quickly subdue Rene Ramirez after blinding him and Team Arrow. She was also able to fight on par against John Diggle, an excellent hand-to-hand combatant and martial artist, for a while before being knocked out.[2]
    • Expert markswomen: As a former CIA agent, Onyx is highly trained with the use of firearms.
    • Expert knife wielder: During her fight against Diggle, Onyx used a knife with great proficiency.
  • Explosives expert: Onyx specialized in different kinds of grenades to cover her tracks, destroy opposition, or cause collateral damage.[2]


  • Lightning grenades: Onyx uses lightning grenades to blind his opponents.
  • Gas emitters: Onyx uses gas emitters to distract opponents and escape.
  • Pistol: Onyx uses a Desert Eagle handgun as her primary sidearm.
  • Combat knife: Onyx used a combat knife whilst battling John Diggle.


DC's Legends of Tomorrow

Season 1


Season 6


Behind the scenes

  • In the DC comics, Onyx Adams, often known as just Onyx, was a former member of the League of Assassins, who later atoned as a member of the Batman family, later becoming a member of superhero group Outsiders and later a leader of Fist Clan. In her first appearance, she was also a supporting character for Green Arrow, Oliver Queen.