Sean and Shawn were the pen-names of John Klamik (July 22, 1935 – January 5, 2005), an American artist specializing in gay male erotica and comics.
His homosexual-themed cartoons were among the first to appear in US publications, including a regular feature in the early years of The Advocate.
He worked under two pen-names: Shawn for more mainstream gay publications such as In Touch, and Sean for fetish publications such as Drummer and Bound & Gagged.