"Psylocke is very lethal, and she's not afraid to get her hands dirty," says actress Olivia Munn in fox's latest promo for "X-Men: Apocalypse." The fan favorite mutant ninja makes her big screen debut in the film, and so catching up new viewers to the appeal of Betsy Braddock is a cinch as the latest X-sequel from Bryan Singer gets ready to roll out.

"X-Men: Apocalypse" arrives in theaters on May 27.