Who she is: Arclight
Her power: She creates huge shockwaves by forcefully clapping her hands together.
Her story: Arclight stands silently next to Callisto for much of X-Men: The Last Stand. She has no lines of dialogue and no character definition beyond her superhero name and mutant ability, which she uses in the fights at Jean Grey’s childhood home and Worthington Labs. Arclight’s big moment in the spotlight comes when Magneto commands her to knock the plastic guns out of the hands of soldiers’ standing in their way at Alcatraz Island, but she’s killed shortly after when The Phoenix unleashes her fury.
Played by: Omahyra Mota
Currently, Arclight is: She was dead, but her status is unknown after the events of X-Men: Days Of Future Past changed the course of the XMU timeline.
Where will we see her next? There are no plans for Arclight, though she might show up in future X-movies if the writers need anyone who can clap really, really loudly.