Creig Flessel’s creativity was fostered by his mother and father, both talented and skilled artisans, and he began his work as a cartoonist in high school. Following his graduation from A.U. in 1935, he worked as a door monitor at the Grand Central Station penthouse at the Grand Central School of Art in exchange for art lessons.
His work was featured by several of the earliest comic book producers, including Chesler, Columbia, and D.C. Comics. Pulp magazine additionally featured some of his free-lance and pen-and-ink illustrations. During WWII, he contributed to war efforts by designing propaganda and patriotic posters for the Office of War Information. He continued to draw comics throughout his career, and following his retirement, he frequently submitted a gag panel to his local newspaper.