Dex-Starr appears as an assist character for Atrocitus in Injustice 2. Dex-Starr appears as a playable character in Lego Batman 3: Beyond Gotham and Lego DC Super-Villains, with his vocal effects provided by Dee Bradley Baker. Ding Dong Daddy Doctor Alchemy Doctor Chaos In the Earth-1 universe, Professor Lewis Lang and his assistant Burt Belker discover a helmet in the Valley of Ur in Mesopotamia that is identical to the helmet on Earth-2 except for its blue color. This helmet contains a Lord of Chaos that possesses Burt and turns him into the sorcerer Doctor Chaos, whose costume is identical to Doctor Fate's except for a reversed color scheme. Superboy confronts Doctor Chaos and removes the helmet from Burt, jettisoning it into space. A new version of Doctor Chaos later appeared briefly in the Justice League of America 2018 series within the main DC Comics Universe. This version is aligned with the Lords of Chaos outfitted in garb similar to Doctor Fate except for a reverse color scheme much like the Earth-1 version. Acting as a protector of the Lords of Chaos's base of operations, the Chaos Realm, he appears when the Justice League's mystical villain, Queen of Fables, attempts to escape her imprisonment. He is swiftly killed by the Queen of Fables and escapes the Chaos Realm. The identity of the person behind Doctor Chaos remains unknown. Doctor Cyber Doctor Destiny Doctor Fate Doctor Light Arthur Light Kimiyo Hoshi Doctor Manhattan Doctor Mid-Nite Doctor Moon Doctor Moon is a fictional character appearing in American comic books published by DC Comics. Doctor Moon is a criminal neurosurgeon who sells his services to other villains that require his unethical skills of body modifications, psychological conditions, and torture. Doctor Moon was first seen in the Pre-Crisis as a member of the League of Assassins. Ra's al Ghul wanted him to reanimate a brain of a corpse so that he can interrogate only for that plan to be foiled by Batman. Doctor Cyber later enlisted Doctor Moon as part of a plot to switch brains with Wonder Woman. This plan failed and Wonder Woman defeated both villains. Doctor Moon was later hired by Guano Cravat to assist in his revenge on Richard Dragon and Lady Shiva. To assist in this plot, Doctor Moon performed surgical enhancements on a group of brutes. These brutes were defeated by Richard Dragon and Lady Shiva. Ivan Angst