CeCe Drake

Charlotte DiLaurentis is a fictional character created by I. Marlene King for the American television series ''Pretty Little Liars'' and its spin-off web series ''Pretty Dirty Secrets'', portrayed by Vanessa Ray. Introduced in the third season under the pseudonym CeCe Drake, Charlotte was a friend and mentor to Alison DiLaurentis before her disappearance. After moving back to Rosewood two years later, Charlotte took over Mona Vanderwaal's reign as "A", an anonymous figure that blackmails, stalks and tortures the main characters of the franchise. Under another anonymous identity known as Red Coat, Charlotte created and led "the A-Team", a group of people who helped "A" in their schemes. During the sixth season, Charlotte is revealed to be Alison's cousin and adoptive sister. After being unmasked as "A", Charlotte revealed she was assigned male at birth as "Charles DiLaurentis" and underwent gender reassignment surgery in her youth. Charlotte was then killed off following the five year time jump, with the killer eventually being revealed as Mona the following season. Provided by Wikipedia