James Gunn seems to have enjoyed himself making Guardians of the Galaxy for Marvel Comics because he was able to cut loose and add a number of small roles for some iconic friends. It sounds like he is up to his old tricks on Guardians Of The Galaxy 2.

Gunn said iconic heavy-metal singer Rob Zombie is recording some audio right now for a voice role in the upcoming Marvel movie. Fans will have to watch the movie to determine which character Zombie is voicing.

Cameos in Guardians of the Galaxy

Gunn brought in a lot of friends to take on small roles in the first movie.

In the scene where the Guardians were introduced into the prison life, Troma's head honcho Lloyd Kauffman was one of the hecklers from the upper level. Gunn got his start in Troma. In that same scene, the alien who Groot stuck his branch in the nose of was none other than Nathan Fillion from Firefly and Castle.

He put some friends and family in the cast. Michael Rooker, a long time collaborator played Yondu and his right-hand man was none other than Gunn's brother Sean Gunn. Listen to the Ravagers' ships global positioning system in the first movie. It is Zombie.

Of course, the reason that Gunn is getting so much leeway is because he knocked it out of the park with the first movie. It was a very fun movie and one of the best Marvel movies to date.

Early word from Guardians of the Galaxy 2 is that it is almost universally loved from test screenings, earning a 100-percent rating.

The future of Guardians of the Galaxy

As one of the biggest success stories for Marvel's movie slate, the fantasy sci-fi superhero team will play a major role in the future of the Marvel franchise.

Both Drax the Destroyer (Batista) and Nebula (Karen Gillan) will appear in Avengers: Infinity War and fans should expect more members of the team will arrive for the sequel.

Guardians of the Galaxy 2 hits theaters on May 5. Those who watch the sequel will be able to see all the people who will have the cameo spotlight. They can figure out the mystery of Zombie, and they can enjoy their movie-going experience.