Whoops?! Did Bradley Cooper just spoil the big villain of Guardians of the Galaxy as well as the identity of Star-Lord's father?
Check out the video below where Cooper seems to say (or at least think) that Thanos will be the big bad of Guardians of the Galaxy 2, but that's not all as Cooper also seems to say (or at least think again) that Thanos is also the father of Star-Lord.
It is possible that Cooper may have mixed up Star-Lord and Ronan, as Cooper references the throne scene from the movie, which saw Thanos talking with Ronan -- not Star-Lord.
Cooper may actually have thought Thanos was Ronan's father, but regardless, at least it does seem he did reveal Thanos as the villain of the sequel.
Interestingly enough, regarding Thanos potentially being the father of Star-Lord, Gunn did cut the love scenes* out of the first movie between Star-Lord and Gamora (even though they were in the trailers). I do recall Gunn stating he didn't want Guardians to be too similar to Star Wars, and if Thanos is indeed Star-Lord's father, we now know the reason Gunn cut the Star-Lord/Gamora relationship from the movie is because it's similar to the Luke/Leia and Darth Vader relationship (Star-Lord and Gamora would be brother and sister/Luke and Leia kissed).
*Correct me if I'm wrong, but if I am recalling correctly, Star-Lord and Gamora kissed in a trailer as well as checked each other out, which didn't make it into the final cut of the movie (or even the Blu-Ray deleted scenes).
Here is some of the text from the interview with Cooper:
Cooper: Josh Brolin's the villain, though. Or he is the main villain, no? He was in the first one. He played what's his name's dad. You know who I'm talking about? The Dark-Lord? The main guy...
Interviewer: We don't know who his dad is.
Cooper: Oh... [laughter]
No, no, you see him. The guy who turns around and talks to him.