 A contributor to numerous prose anthologies, Murray has written short stories of the characters Superman, Batman, Wonder Woman, Spider-Man, Ant-Man, the Hulk, the Spider, The Avenger, the Gray Seal, the Green Hornet, The Secret 6, Sherlock Holmes, Sky Captain and the World of Tomorrow, Honey West, Zorro and Lee Falk's the Phantom.For Marvel Comics, Murray co-created the superhero Squirrel Girl with artist Steve Ditko.He scripted "The Destroyer" black-and-white magazine, as well as single stories starring Iron Man and the Punisher.