The protagonists of this first wave of CrossGen comics (Sigil a military science fiction space opera; Mystic a magical fantasy fiction; Scion a King Arthur-type adventure series; and the folklore-esque Meridian) were linked in commonality by the “sigil” that each character had received. It was a branding on their body, a marking that granted them unusual powers. The Sigil and the story of the Sigil-Bearers was a prominent aspect of the ongoing Sigilverse narrative.
Over the next three years, CrossGen released other titles: Crux, Sojourn, Ruse, and a key title Negation were released in 2001. The following year Route 666, Way of the Rat, and The Path were introduced. By 2003, numerous titles meant to expand the Sigilverse in a build-up to a crossover event called Negation War, were published that would address the growing issue of who created the Sigil-bearers. Although most CrossGen titles shared common elements, such as a Sigil, the presence of a Mentor and a member of the god-like First, their titles rarely crossed over with each other. The one planned company-event Negation War; was never concluded.