[2] He studied commercial art at Oklahoma State University-Okmulgee.
[1] He credited Neal Adams' Batman stories and Gene Colan's and Tom Palmer's work on Daredevil as having "won my heart in junior high to aspiring (dreaming) to be a comic book artist.
During the 1980s and 1990s, he worked primarily for DC Comics, his first story for that publisher appearing in The Vigilante #48 (December 1987).
[4] The Gunfire character was created by Len Wein and Erwin in Deathstroke the Terminator Annual #3 (October 1993).
[7] Erwin drew the comics adaptation of Batman Returns as well as Star Trek: The Next Generation Shadowheart, the graphic novel adaptation of The Ashes of Eden, and the Mike Danger series published by Tekno Comix.