A former member of the League of Assassins, Onyx forsook that life and joined the same ashram monastery that the Green Arrow once belonged to. When the order's master was killed, she sought the Green Arrow to take down his killer. Onyx came to Star City seeking that same killer again. She later became an ally to Batman during the Batman: War Games story arc when she joined the Hill Gang (led by Gotham City undercover agent and Batman's ally Orpheus), but she assumed the leadership following the latter's murder by Black Mask. Following this story arc, she was not seen again until it was revealed that she worked as one of the Oracle's contacts for the Birds of Prey. She became a trainer for Cassandra Cain in Bludhaven. Onyx in other media Onyx Adams appears in the Arrow episode "Next of Kin", portrayed by Chastity Dotson. This version is a former member of the League of Assassins from 1743 who used a Lazarus Pit to survive into the present and become a black ops agent in Syria before several members of her team betrayed her. She forms a new team to kill the defectors, but is ultimately defeated by John Diggle and his allies and arrested by the police. Onyx makes a non-speaking appearance in Batman: Bad Blood as a member of Leviathan. This version expresses romantic feelings for her superior, the Heretic, despite being frustrated by his inability to truly feel emotions. In the hopes of fixing this, she and the Heretic kidnap Damian Wayne in an attempt to absorb his memories, only for Talia al Ghul to kill the Heretic. Onyx seeks vengeance on her, which culminates in her eventually attacking Talia on a hovercraft and causing the vessel to crash and explode. A teenage Onyx Adams appears in Young Justice: Phantoms, voiced by Logan Browning. This version was raised by her maternal grandfather Amazing-Man, but ran away from home due to the fear that she could not live up to his moral standards, which she later regrets, and was recruited by Sensei to join the League of Shadows. In the present, she is unknowingly tricked by the League into defecting from them and cause confusion for the Team. After joining forces with Artemis Crock and Cheshire to rescue Orphan, Onyx stays on Infinity Island to rehabilitate from her experience with the League. Orca Otis Otis is