Not to be confused with Sturgis Butterfield of Hero Hotline, who has also used the name Mr. Muscles.Mr. Muscles is a fictional comic book superhero created in 1956 by writer Jerry Siegel for Charlton Comics, and drawn by Bill Fraccio for the first of two issues of his namesake comic, and by the team of penciler Charles Nicholas and inker Vince Alascia for the second. A young Dick Giordano provided the premiere issue's cover.