Stan Lee will not make a cameo in August 2014's Guardians of the Galaxy, the legendary writer confirmed.
"That's the one group I didn't create. I didn't write Guardians of the Galaxy. I'm not even sure who they all are. I can't wait to see the movie," he told DweebCast when asked if he'd appear in the film. It will be the first Marvel Studios film that Lee does not appear in.
Of course, the second sentence in the quote is the operable one, as Stan Lee also did not create Captain America, but still appeared in Captain America: The First Avenger. While Joe Simon and Jack Kirby created Cap, Lee did write the character extensively, contributing stories as far back as the third issue of the character's first volume, under his birth name of Stanley Lieber. He later, of course, brought him out of retirement in Avengers #4 in 1964, bringing the character onto the team of Earth's Mightiest Heroes.
Lee will appear in April's Captain America: The Winter Soldier, the directors confirmed last summer. He will also be appearing on Marvel's Agents of S.H.I.E.L.D. on ABC in February.