Mister X
The character reappeared in Motter's "Electropolis" mini-series from Image Comics in 2001-03. Motter's Vortex issues, along with the covers by Michael Kaluta, Bill Sienkiewicz, Howard Chaykin, Dave McKean, and others, were reprinted in "Mister X: The Definitive Collection" (Volumes I and II) from iBooks in 2005.