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Official Site: DC Comics

The Harbinger (Lyla Michaels) is a fictional character, a comic book superheroine appearing in publications by DC Comics. Created by writer Marv Wolfman and George Pérez, she first appeared in her civilian form in New Teen Titans Annual #2 (July 1983) before taking on the mantle of the Harbinger in Crisis on Infinite Earths #1 (April 1985).

A version of Lyla Michaels appeared in The CW television series Arrow played by Audrey Marie Anderson as a recurring character. In the series, she is the director of A.R.G.U.S. and the wife of John Diggle. Michaels was also a recurring character on The Flash television series. Anderson's character temporarily became a more faithful version of the Harbinger for the Arrowverse crossover "Crisis on Infinite Earths".

An orphan whose ship sunk during a violent storm, Lyla Michaels was rescued from certain doom by the Monitor, a cosmic being locked in an eternal war against his anti-matter counterpart the Anti-Monitor. Raising Lyla as his assistant, the two monitored the multiverse's heroes and arranged for weapons and super-powered henchmen for various villains, to test heroes that the Monitor would recruit for his impending final battle against the Anti-Monitor. The Earth that Lyla was rescued from was Earth Prime (Marv Wolfman said when asked on Facebook about what Earth was she rescued from).

When the Crisis on Infinite Earths began, Lyla assumed the identity of the "Harbinger" after entering a womb-like chamber which energized her and allowed her to create a series of doppelgangers in her new costume. These doppelgangers recruited a wide variety of heroes and villains to fight the Anti-Monitor's shadow demons and protect a series of vibration towers, designed to protect Earth 1 and Earth 2 from the wave of Anti-Matter destroying the DC Multiverse.

Harbinger has not been a contender in any CBUB matches.