Coy Turnbull (the original spelling) was born on December 12, in Elmhurst, Queens, New York.

His skills were noticed and he began work as a background artist on Marvel projects for Adam Pollian and Walter McDaniel.

In 2002, Turnbull's big break happened during the Wizard World Chicago Comic Convention, at a portfolio review with Aspen MLT's Frank Mastromauro (Executive Vice President) and Peter Steigerwald (Vice President of Publishing).

The work caught their eyes, and a week after the con they contacted him about future employment with Aspen MLT.

After receiving the penciler job with Aspen MLT, Turnbull moved to Santa Monica, California to work in the Marina Del Rey studio.