DC Comics writer Alvin Schwartz, best known to Superman fans as the creator of Bizarro, has passed away at the age of 94.

Schwartz died on October 28th at his home in Chesterville, Ontario (just outside Ottawa, Canada’s capital) from heart-related complications.

In the nearly 20 years Schwartz worked in comics, he wrote countless Batman and Superman stories and came up with the idea (and title) for World’s Finest comics.

"He was a fascinating man who obviously put a lot of thought into his work before he did it, while he was doing it... and for decades after," comic writer and commentator Mark Evanier wrote on his blog News From Me.

"He was also a very fine writer and we were happy to present him in 2006 with the Bill Finger Award for his lasting and important work."

Other noteworthy accomplishments included a Superman operetta that Schwartz penned in 1947. Released as a record and storybook, the musical featured characters and villains breaking into song and remains a rare and prized collectible for Superman fans.

Schwartz retired from comic book writing in 1958, going on to pen novels under an array of names, as well as several screenplays.