Bill Galvan has been a comic book fan since he was 7 years old, and has been drawing comics ever since. As a junior in high school he was awarded a summer scholarship to the Academy of Art in San Francisco. After graduation, he went Southern Utah University, working as an editorial cartoonist and layout designer for the school newspaper, the Thunderbird. He also wrote and drew a weekly comic strip called Thunderbird, featuring a winged superhero of the same name. After graduating with a Bachelors degree in Art/illustration, Bill worked on his own comic book series Thunderbird, a black and white bimonthly comic.

In 2003, Bill co-created The Scrapyard Detectives, a full color comic book series for The Diversity Foundation. In 2004, Galvan revived Thunderbird in a full color series, which lasted for 2 issues.

Bill currently draws for Archie Comics as a freelance penciler, and has also pencilled and colored the third issue of the Scrapyard Detectives in 2006.