John Ruach is a comic book colorist best known for Image's Invincible. He also worked on Batwoman, Wayward, Savage Dragon, Mighty Morphin' Power Rangers, Star Trek, Amazing Spider-Man, Convergence: Superboy and the Legion of Super-Heroes, New Mutants, Superman/Batman, Convergence Aquaman, Spawn, Venom, Star Wars Tales, Fantastic Four, Teen Titans: Year One, X-23, House of Whispers, Mighty Avengers, Batgirl, Last Stop on the Red Line, Marvel Adventures: Spider-Man, Convergence Superman: The Man of Steel, Detective Comics and Batman: Arkham Knight.