É o Jean. Bryan Singer diz :
The trailer opens with what we took to be a shot of Apocalypse walking menacingly through Cerebro, the device that James McAvoy’s Professor X uses to pinpoint hot mutant singles in his area. Not so, according to Singer.
“That’s actually Jean,” he says, referring to Sophie Turner as a young version of Jean Grey, the powerful telekinetic who we last saw played by Famke Janssen in X-Men: The Last Stand. “Her hair makes her a little strange looking! But I don’t want to explain why she’s doing what she’s doing…”