It may still be a long time before the highly awaited sequel 'Guardians of the Galaxy Vol. 2' will start principal photography, but actress Karen Gillan is already looking forward to returning as Gamora's blue sister Nebula.

The former 'Doctor Who' star recently revealed that Nebula will be back in the second 'Guardians of the Galaxy.' However, Karen Gillan also added that she isn't sure about her character's hairstyle.

"I will be back," Gillan said. "And I still don't know if I'm going to be bald or not."

The comment immediately made the interviewer ask, "There's a possibility you won't be?" Karen Gillan's answer was careful.

"There's a possibility," Gillan said. "I don't know why or how, but there is."

Does this mean Nebula might actually have hair in 'Guardians of the Galaxy Vol. 2?' Director James Gunn has previously shut down a fan's Twitter request to give Thanos' other adopted daughter a new hairstyle with an epic single word response.

It looks like James Gunn might also be tired of answering questions about other Marvel characters making an appearance in 'Guardians of the Galaxy Vol. 2.' The director recently confirmed on Twitter that the Hulk will not be in the sequel, and ultimately destroyed all rumors that Captain Marvel will be flying in to help Star-Lord and his friends.

James Gunn did admit that there are a few characters he would like to add to the stellar 'Guardians of the Galaxy Vol. 2' cast although they don't necessarily exist in the same universe.

'Guardians of the Galaxy Vol. 2' will mark the return of Chris Pratt as Peter Quill a.k.a Star-Lord. Zoe Saldana and David Bautista are expected to return as Gamora and Drax the Destroyer, while Bradley Cooper and Vin Diesel will once again provide the voices of Rocket Raccoon and Groot.