All Marvel fans know so far is that villain Thanos is going to be causing major headaches for the Avengers and other superheroes. However, he's not going to be the main villain in "Guardians of the Galaxy 2" -- at least that's what director James Gunn said in response to rumors that Bradley Cooper had spoiled who the franchise's next bad guy would be. 

Gunn, who is directing the sequel to his 2014 hit, took to Twitter to dismiss rumors that Cooper had accidentally spoiled plot details during an interview. Gunn said Cooper did not ruin the movie and that the actor hadn't read the script yet.

In an interview with MTV, Cooper, who plays Rocket Raccoon in the films, said the main villain of "Guardians of the Galaxy 2" will be Thanos, played by Josh Brolin. While many thought this was a spoiler, Cooper backtracked and said Brolin was also the main villain in a way in the first "Guardians of the Galaxy."

You can see the full interview below:

A fan followed up on Gunn's tweet, asking if it was already revealed that Thanos would be the main villain of the film. Gunn said, "That has not been revealed and Bradley doesn’t know the main villain (or didn’t at the time of the interview)." However, it has been previously revealed that the Avengers will fight Thanos in the two-part "Avengers: Infinity War," which is due out in May 2018 and May 2019. reported that Vin Diesel received a copy of the "Guardians of the Galaxy 2" script, and, in a live Facebook video with fans, said he couldn't put the script down when he started reading it. Diesel, who portrays Groot, added that the script came with a CD, "Awesome Mix Vol. 2."

"James Gunn is such a great writer. I read this script and I go, 'You’re a great director, and you’re this good a writer too.' No wonder Marvel is so excited about what you’re doing. No wonder Marvel can’t wait to see 'Guardians of the Galaxy 2,' " Diesel said.

On Nov. 4, actor Dave Bautista told CinemaBlend he hadn't read the script to the upcoming film yet, but he knows Gunn is going to make his character Drax "more badass." Other than that, Bautista didn't seem to know much about the plot, but he hopes it ties in with "The Avengers" eventually.

"As far as the storyline as a whole, I honestly don’t know, and if I did know obviously I wouldn’t tell you, but I hope they’ll continue on with that path, and -- fingers crossed as a fan -- I hope that it will tie in with 'The Avengers' somewhere down the road. I’ve only heard rumors, but I’m being honest, and I’ve been honest in the past, I hope that it ends up there because I would love to go there."

"Guardians of the Galaxy 2" is expected to hit theaters on May 5, 2017.