As a comic book industry veteran with a career spanning nearly three decades, Marshall has contributed writing, lettering, coloring, editing, and project oversight to a multitude of publications tying together comic books, video games, and movies. While Marshall has been a part of UDON Entertainment for 20 years, he became the director of operations at UDON Entertainment in September 2022. Marshall also has a love of Macross, model kits, and the tabletop RPGs of his youth, including TMNT, Rifts, and D&D.