How did the actor perfect moving around in that big Darth Vader suit?
He called the ‘Vader movement specialist’, of course!
Hayden Christensenknows a thing or two about playing Darth Vader.

Hayden Christensen as Darth Vader in ‘Obi-Wan Kenobi’.Lucasfilm Ltd.
But other than breaking out of restrains while yelling “NOOOOOOOOO!”
“That was something that we spent a lot of time working on,” answers Christensen.
“And this suit really just informs the way you move.”

Hayden Christensen in ‘Star Wars: Episode III - Revenge of the Sith’.Industrial Light & Magic/TM and 20th Century-Fox Film/Courtesy Everett Collection
“We had this woman who was like a Vader movement specialist,” reveals Christensen.
“And she made sure that we were always in the right ballpark.”
But Christensen explains the actual importance of the job.
So how easy was it for the actor to move around in that armor?
And I said that to George [Lucas], and he said, ‘It’s okay.
This is your first time in this suit.
So it should feel very mechanical and maybe not very natural.’
Now, this is 10 years after that.
So he’s had a lot of time to acclimate.
But again, it’s a full-on challenge, just trying to get to set in that suit."
What about going to the bathroom?
“That poses a whole other set of challenges,” he notes.
But that was all back when Anakin/Vader still had at least three of his limbs still intact.
Will we get to see any of that familiar physicality from the Dark Lord inObi-Wan Kenobi?
“Yeah, we get a little bit of that,” reveals Christensen.
But his style changes and evolves as he tries to fight in his armor now."
Does he have a go at emulate Jones' iconic and imposing tones?
“Obviously, we stay true to voice that we all know and love,” he says.
And it’s my own sort of version of it."
“It’s really exciting, man.
I think the general anticipation is there.
It’s all been really positive and I’ve enjoyed the experience.”