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Captain Boomerang is one of the super-villains mentioned to have been an enemy of The Flash along with Mirror Master and The Top, before the Flash was crippled for life during the attempted assassination of John F. Kennedy.
- 1 Appearances of George Harkness (Flashpoint)
- 1 Images featuring George Harkness (Flashpoint)
- Quotations by or about George Harkness (Flashpoint)
- Character Gallery: George Harkness (Flashpoint)