In the 책 또는 the show? (I haven't read the books, but I've read spoilers. Plus, there are 16 of those f***ers, so I'm definitely not planning on 읽기 them)
Show: Mona (Original A) 샬럿, 샬 롯 DiLaurentis (Big A) Alex 드레이크, 드레이 크 (Uber A/A.D.)
Books: Mona (Original A) Alison (Second A) Nick Maxwell (Third A/Alison's helper)
At first A is Mona who is mentally ill. Then A switched to Charlotte/CeCe Drake. Then when 샬럿, 샬 롯 died A.D. became the bigger and better A. A.D. stands for Alex Drake, Spencer’s twin sister who she didn’t know about until the finale in season 7.
