Comic book writer Dwayne McDuffie, best known for his work for DC and Marvel, reportedly passed away due to complications resulting a from a surgical procedure at an undisclosed location on Monday (February 21). He was 49 years old.

Dwayne wrote several projects for TV and movies, including “All Star Superman”, “Justice League” and “Ben 10: Alien Force”. In 2003, the writer won a Humanitas Prize for an episode of Static Shock in which the superhero finds he cannot protect his loved ones from gun violence.

In 1993, Dwayne became the co-founder of Milestone Media, which was originally created to offer a better representation to minorities in comics. They introduced character like Static, Icon and Xombi.

R.I.P. Dwayne McDuffie.