zero hour

Zero Hour was a 1994 comic book miniseries and crossover storyline that ran in DC Comics. In it, the one-time hero Hal Jordan, who had until then been a member of the intergalactic police force known as the Green Lantern Corps, mad with grief after the destruction of his home town of Coast City, and having obtained immense power as Parallax, attempts to destroy, and then remake, the DC Universe.