The Nova Corps are featured in the movie in addition to Rhomann Dey (who in the comics gives Nova his powers).
Marvel Comics cancelled the 2008 Guardians of the Galaxy comic book when they heard a movie was getting made, even though both James Gunn and Kevin Feige credit the writers, Dan Abnett and Andy Lanning (DnA), as the inspiration for the movie.
Abnett and Lanning also penned Nova at the time, which featured Richard Rider, and that was cancelled, too.
Yeah, we are thinking the same thing - Marvel Comics must be a nice place to work for when it fires its writers who inspire billion dollar movies (they are also cancelling the Fantastic Four comics).
Anyway, our Guardians of the Galaxy "mysterious" source has filled us in on a few Nova details from the movie.
The source previously told us the Stan Lee cameo, a Star-Lord/Ronan/Thanos scene, as well as news about the reshoots.
Regarding Richard Rider, we are told he's not in the movie. We're also told that there is no Quasar, Beta Ray Bill or Silver Surfer (it was said at one time Marvel was trying to get Surfer and Galactus back from Fox).
We're also told that Xandar doesn't get blown up. We have to give James Gunn credit for not going the easy route and destroying Xandar, as it's a commonly used plot device in the comics. We're told either Ronan or Thanos make an attempt, but it doesn't happen. We're guessing Ronan because he has some kind of religious complex and is said to be on a holy war against the Xandarians.
It's possible Nova (hopefully Richard Rider) could be featured in the post-credit scene. I'm waiting for info in regards to that.
Latino Review says they know the Guardians of the Galaxy post-credit scene(who confirmed our Stan Lee cameo exclusive for us). Is it Nova?:
I know the rumored GOTG post credit sequence but none of y'all would believe me anyway.— Umberto Gonzalez (@elmayimbe) June 17, 2014
If Marvel Studios does decide to go with Nova, we have faith they will use Richard Rider based on what Marvel Chief Creative Officer Joe Quesada said about the comics relating to the movies:
“Really, you have to start with the loyalists,” Quesada said. “If the loyalists reject it, then we feel that everyone is going to reject it.”
Update: A strong possibility could be Adam Warlock as well.
Update #2: A second tweet was posted stating it's Richard Rider:
RICHARD RIDER!!!— Umberto Gonzalez (@elmayimbe) June 17, 2014
"Guardians of the Galaxy" has an August 1, 2014 release.