Guardians of the Galaxy Vol. 2 brings back Karen Gillan as Nebula, but it wasn’t always supposed to be that way.
When asked if she knew that Nebula would go from being a villainous character in the first Guardians of the Galaxy to aligning with the heroes in Guardians of the Galaxy Vol. 2, she said that the original script had Nebula dying in the first film.
Nebula will have her own arc in Guardians of the Galaxy Vol. 2, just like all of the characters will.
Nebula was one of the main villains of the first Guardians of the Galaxy, pursuing the heroes and battling them throughout the film.