Despite the involvement of successful science fiction/fantasy novelists Michael Moorcock, Lucius Shepard and Christopher Hinz, and established comics creators Howard Chaykin, Elaine Lee, Matt Howarth, Warren Ellis, Walt Simonson, and Garth Ennis, sales of the comic books were low, and most of the ongoing titles were cancelled after 12 or fewer issues. Ellis' Transmetropolitan was switched to the Vertigo imprint, where it continued for several more years before reaching its planned conclusion. Ennis' Bloody Mary mini-series and Michael Moorcock's Multiverse were later collected in Vertigo-label paperbacks and Moeller's Sheva's War was released as a graphic novel paperback by Dark Horse.