Eclipso () is a supervillain in the DC Comics Universe. The character is the incarnation of the Wrath of God and the Angel of Vengeance that turned evil and was replaced by the Spectre. The character bears notable similarities to Dr. Jekyll and Mr. Hyde. Eclipso appeared in the second season of The CW television show Stargirl, portrayed as an adult by Nick E. Tarabay and Jason Davis and as a young boy by Milo Stein. Publication history Eclipso first appeared in House of Secrets #61 (August 1963) and was created by Bob Haney and Lee Elias. Fictional character biography Originally, Eclipso was written as a generic villain with average superpowers, who would routinely enact an elaborate plot to fulfill his hedonistic motivations. However, the 1992 Darkness Within miniseries modified the character to be an evil and megalomaniacal entity. Eclipso's character laments the power he once had as a spirit of divine vengeance. Eclipso would frequently seek to possess beings of incredible power like Superman, Lar Gand, and Captain Marvel to achieve his ends. Bruce Gordon Eclipso's early comics debut is tied to his first modern host, Bruce Gordon (named after Bruce Wayne and Commissioner Gordon as an inside joke), a scientist specializing in solar energy. While in the jungle to view a solar eclipse, Gordon was attacked by a tribal sorcerer named Mophir. Before plunging to his death off a cliff, Mophir wounded Gordon with a black diamond. Afterwards, Gordon transformed into the villainous Eclipso whenever an eclipse occurred. A blue-gray or purple circle covered the rightmost two-thirds of his face, resembling a partial eclipse. Gordon experienced many Jekyll-and-Hyde transformations and misadventures in The House of Secrets. During this period, Eclipso was portrayed as a conventional villain, possessing super strength, partial invulnerability, and eye blasts (aided by his black diamond). Eclipso's transformations were later altered so that any type of natural eclipse, lunar or solar, would cause Eclipso and Gordon to split from one another, while an "artificial eclipse" -- an object blocking out a light source -- would merely transform Gordon to Eclipso. Any bright flash of light would banish Eclipso back into Bruce Gordon's body or reverse the change. Eclipso: The Darkness Within In the early 1990s, DC retconned Eclipso in a company-wide crossover built around the miniseries Eclipso: The Darkness Within. Eclipso was revealed not simply to be Bruce Gordon's dark half, but a vengeance demon