“I love Adam Warlock. He’s one of my favorite characters. In all truth, I wrote an early treatment where I had Adam Warlock as a part…this is your big scoop because I don’t think I’ve told anybody this… It was Adam Warlock.
He was a big part of the screenplay and I realized it was one character too many. And I adored the character. I adored what we had done with him. I think we did something really creative and unique with Adam Warlock. But it was one character too many and I didn’t want to lose Mantis and Mantis was more organically part of the movie anyway. So I decided to save him for later.”
And on whether or not Warlock will make an appearance in Avengers: Infinity War first…
“He’s not. He’s not in Infinity War. But he will be a part of the future Marvel cosmic universe and a pretty important part of that… if he appears anywhere in the future, it’ll be in Guardians”
Guardians of the Galaxy Vol. 3 does not yet have a set release date, but a 2020 date during Phase Four is more than likely at this stage. In the meantime, the Guardians of the Galaxy will be appearing in both 2018’s Avengers: Infinity War and 2019’s as-yet-untitled Avengers 4.