Sister of Captain Britain, Betsy Braddock is the psychic X-Man known as Psylocke. Originally just a telepath, Betsy ended up switching bodies with a deadly assassin that allowed her to become the psychic ninja she is today.
Psylocke uses her telekinetic powers to manifest a “Psi-Knife” and her trained ninja skills to slip into the shadows and cut enemies down with her martial arts and katana skills.
Psylocke is available in game for premium and non premium currency. Just log in and head to the Marvel Store. So far she has two costumes available, classic and x-force.