Adler attended the High School of Art and Design, and graduated from Brooklyn College. Adler was the cousin of radio host Howard Stern.
Jack Adler was a comic book colourist who worked for DC Comics since the mid-1940's to the early 80s. During his early years in the company, he worked as a colourist, but later on he started working on the production department, where he worked until his retirement in 1981.
- He received the industry's Shazam Award for Best Colorist in 1971.