The identity of "A" in Pretty Little Liars changes throughout the series, as multiple characters assume the role of the main antagonist who stalks, blackmails, and manipulates the main characters.
Main "A" identities in the TV series:
- Mona Vanderwaal was the first "A" revealed, tormenting the main characters in seasons 1 and 2. She sought revenge related to Alison DiLaurentis and her own past grievances
- Charlotte DiLaurentis (CeCe Drake) took over as "A" from seasons 3 to 6A. She is revealed to be transgender and became "A" because she wanted revenge on the Liars for being happy Alison was gone
- Alex Drake appeared as "Uber A" or "A.D." in seasons 6B to 7, continuing the torment of the Liars
Additional details:
- "A" operates through a secret group known as the A-Team, which helps carry out threats and schemes against the Liars
- The character "A" is known for sending threatening messages, spying, and psychological manipulation, often using riddles and dolls as motifs
- In the original novels and the Original Sin spin-off, other characters also assume the "A" identity with more violent tendencies
In summary, "A" is not a single person but a mantle taken up by several characters, primarily Mona Vanderwaal, Charlotte DiLaurentis, and Alex Drake, who serve as the main antagonists in Pretty Little Liars
