Guardians of the Galaxy Vol. 2 director James Gunn has confirmed a story that surfaced earlier this week in which Deadpool co-writer Paul Wernick asserted that 20th Century Fox traded the film rights to Ego the Living Planet back to Marvel in exchange for altering the character of Negasonic Teenage Warhead for her Deadpool appearance.
"Yes, this is true! When I first pitched Ego as Quill's father, I thought we owned the character," Gunn explained in a Facebook post. "After I had worked out a very elaborate story with Ego the Living Planet as a very important part of the Marvel cosmic universe, I learned that we actually didn't own the character. I had no back up plan, and it would be nearly impossible to just drop another character in. Thank God Fox came to us and wanted to make a trade..."
Fox controls the film rights to numerous Marvel characters in the X-Men and Fantastic Four franchises. Ego presumably fell under the latter, despite not debuting in Fantastic Four and only making a handful of appearances in that title.
Meanwhile, GotG Vol. 2 actress Karen Gillan, who plays Nebula in the film, tweeted that she is back on set for reshoots, which she called "the easiest reshoots ever." These are likely standard reshoots of the kind that happen with most major films.
Guardians of the Galaxy Vol. 2 is due out in theaters May 5, 2017.