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Aria Montgomery (Portrayed by Lucy Hale)
- "There’s a reason why we can’t just go around telling the truth. Because it comes back to bite you. Hard."
- Action Girl: Especially after taking up martial arts.
- Aloof Dark-Haired Girl: Aria is a composed, aloof, insightful brunette.
- Beware the Nice Ones: She can be extremely ruthless and aggressive when provoked. In "She's Come Undone", she completely trashes Ezra's apartment.
- Book Worm: It's one of her most common traits, and how she connects with Ezra upon first meeting him.
- Brainy Brunette: Though not as much as Spencer, being more artistic then scholarly.
- Broken Bird : especially after Ezra shows his true colors. She loses it.
- Childhood Friends: She's been friends with Holden since kindergarten.
- Consummate Liar: Not as much as Ali, but definitely fits.Mona: Which one of you girls is best at hiding the truth from someone who's close to you?Spencer, Hanna & Emily: (points at Aria) Her!Aria: Wow, really? Thanks, you guys.
- Cool Big Sis: She's always looking out for Mike.
- Cute Bruiser: Begins self-defense classes in "Turn of the Shoe" and uses it to take Red Coat in a fight.
- Dating Catwoman: Gender-flipped: Aria's had a romantic relationship with Ezra (aka A). Subverted when it turns out that he actually wasn't the bad guy, he was just writing a book.
- Eerie Pale-Skinned Brunette : fits her Perky Goth past.
- Erotic Dream: Has one about Jason in the second season.
- Goth: In flashbacks.
- Heroic B.S.O.D.:
- Has this at the end of "Stolen Kisses", after Ezra's mother blames her for his economic situation and getting him to quit Hollis and Rosewood High.
- In "She's Come Undone", after finding out that Ezra dated Alison in college, was writing a book about her, and knew who Aria was before they even met.
- Hipster: She is artsy and imaginative and has a hipster style.
- I Did What I Had to Do: Inverted. After she kills Shana in defense of her friends, she is deeply upset and even has nightmares about it. It's her friends who assure her that she had no other choice.
- Just Friends: With Holden. Both are fine with it, though.
- Meaningful Name: "Aria" is shown to be a talented singer, as demonstrated by her duet with Noel Kahn in Season One.
- My God, What Have I Done?: She deeply regrets killing Shana in "EscApe from New York", even though it was in defense of her friends.
- Near-Death Experience: In the 3 season Halloween special.
- Nice Girl: As much as a Consummate Liar can be.
- One Head Taller: When she dates Noel Kahn, who is played by 6'1 Brant Daugherty, while Aria is played by 5'2 Lucy Hale.
- Teacher/Student Romance: With Ezra. This is even weirder because Aria's poor, oblivious mother works at the school too. Ezra eventually quits and goes to teach at- wait for it- her father's school.
Hanna Marin (Portrayed by Ashley Benson)
"Sometimes telling the truth does more harm than good."Hanna is the "It Girl" of the group. After Alison's disappearance, she distances herself from the other girls and becomes best friends with another unpopular outsider named Mona. They managed to make themselves popular over the summer by becoming gorgeous and skinny. Hanna takes Alison's place as the most popular girl at Rosewood High School in her absence and wins 'Homecoming Queen'. She does everything for her loved ones and is the funny one of the bunch.
- Adaptation Dye-Job: She was a brunette in the books, but blonde in the TV show.
- All Girls Want Bad Boys: Subverted in her relationship with Caleb.
- Aren't You Going to Ravish Me?: She feels completely insulted that Shana flirts with every girl around but her. This, of course, leads to her not liking Shana at all.
- Berserk Button:
- She does not take it well when Caleb insults Justin Bieber.
- When A gets between her and Caleb, for that matter, driving her to an almost-obsessive search to unmask him/her in season 3 after Caleb discovers there's a second A, which is likely to get him in danger for knowing too much.
- Big Damn Heroes: She charges headlong into a burning house to save Jenna, without even a second's hesitation.
- Big Eater: Prior to Alison's disappearance, she was quite an eater; she even sneaked food between meals, at least until Alison discovered her.
- Book Dumb: She once claimed that she couldn't even spell Louisiana, let alone know anything about its history.
- Can't Hold His Liquor: Granted, it was Kate's fault since she didn't know she was ingesting alcohol, but still...
- The Chick: Minored in The Big Guy.
- Disappeared Dad: Her parents are divorced and she lives with her mother.
- Deadpan Snarker: Despite her ditziness, she's quite witty and sassy.
- Dumb Blonde: Although her grades aren't really bad, she has her dumb moments as well.Hanna: Please, Jenna can't hear us. She's blind.
- Eating the Eye Candy: When Hanna and Caleb are in the shower (he's bathing, she isn't) and he turns around, she likes what she sees...
- Everyone Loves Blondes: Blonde and popular at school.
- Fanservice Pack: Season 3 shows Hanna wearing Hotter and Sexier outfits. Hanna herself becomes Hotter and Sexier.
- The Fashionista: When Spencer's room was searched by the police Hanna and she mentions the cops taking some of her shoes, Hanna's immediate reaction is to ask if the Tory Burches might not have been confiscated too.
- Fish out of Water: When she's following Paige and ends up at a lesbian bar. Of course, Hilarity Ensues.
- Formerly Fat: She used to be mocked by Alison (the Alpha Bitch and former "It Girl") for being overweight. Over the summer, after Alison's disappearance, Hanna became gorgeous and skinny.
- Four-Temperament Ensemble: The Sanguine. Whenever she demonstrates any melancholic tendencies... it's bad.
- Hair of Gold, Heart of Gold: If occasionally shallow. She's still young, blonde, beautiful and kind when she wants to be.
- Heterosexual Life-Partners: With Mona, after Ali vanishes from the picture. They later grow apart, as Mona was revealed to be in the A Team, but their distance is bridged a little in the season4 premiere. It will probably never be what it was, though.
- Hotter and Sexier: As of Season 3.
- In-Series Nickname: "Hefty Hanna", by Alison, due to her being fat before Ali went missing. This is later picked up by A, much to her annoyance.
- Ms. Fanservice: Although she did have a few scenes, she hits the ground running in season 4. "Grave New World" in particular; Hanna's Halloween costume accentuated her cleavage a lot more than the rest of the girls, which the viewers indeed noticed.
- Near-Death Experience: In Season 1, when A runs her over with a car.
- Nice Girl: She's too nice to qualify as an Alpha Bitch or even Lovable Alpha Bitch. Despite her popularity, she's anything but bitchy.
- Only Child Syndrome: Well, she has Kate after her father marries Isabel in season 2, but that aside she definitely counts.
- Plucky Comic Relief: Her stock in trade.
- She Knows Too Much: In season 1, after A runs her over with a car, he/she texts Aria, Spencer and Emily that simply said "she knows too much".
- Sarcasm-Blind: Takes it as a compliment that she's as subtle as a hand grenade.
- Smarter Than You Look: Surprisingly, it's revealed in season 5 she scored very high scores in her SATs.
- Spoiled Sweet: She is a glamorous rich girl and at the top of Rosewood High's Popularity Food Chain, but she's nice to just about everyone.
- Spell My Name with an "S": Although Word of God has stated that her name is Hanna (same name as in the book series), some fans insist her name is really Hannah.
- Undercover as Lovers: She pulled this off with Toby in "The Remains of the A".
- Unsuspectingly Soused: Kate puts alcohol in her drinks at Tom and Isabel's wedding rehearsal, which does not end well.
Spencer Hastings (Portrayed by Troian Bellisario)
"You know what they say about hope. It breeds eternal misery."
A classic overachiever, Spencer is confident, calculating, and could stand up to Alison when no one else could, showing her determination. However, Spencer begins to show a bit of strain when she and her friends begin receiving strange texts from the mysterious "A". She's the smart member of the group.
- Academic Athlete: She isn't just into field hockey, lacrosse and tennis, but also one of the better students in her class and a potential captain of the academic decathalon team.
- Adaptation Dye-Job: Blonde in the books, brunette in the TV show.
- All Girls Want Bad Boys: According to most people in Rosewood, this suits her relationship with Toby. Although now that Toby has been revealed as part of The A Team, it takes on a new light.
- Alone with the Psycho:
- In the Season 1 finale, with Ian.
- In the Season 2 finale, this time with Mona.
- Aloof Dark-Haired Girl: She's a tall, mature, beautiful girl with long dark hair.
- Ambiguous Allegiance: After joining the A Team. It's later revealed in the season finale that she did not switch sides.
- Badass Bookworm: Not only the smartest liar, but also a Determinator and quite the detective. in season 5, she threatens "to slit Noel Kahn's face open" with a bit stick. You Go, Girl!.
- The B Grade: Considers getting a B "failing".
- Big Screwed-Up Family: Specially as of season 2, the Hastings prove to be this.
- Book Worm: Greatly emphasized in this quote:Spencer: I've been in the library so much, I am on a first-name basis with the homeless guy that sleeps next to the microfiche.
- Brainy Brunette: Has brown hair and is the smartest of the liars.
- Broken Ace: An excelling athlete and student (Ace) , who lost her friend Not Quite Dead, battles an addiction and a pretty bad relapse, suffers a mental breakdown more then once and deals with her parents divorce. Pretty much covers the broken part.
- Deadpan Snarker: Emphasis on Deadpan.
- Determinator: She is a very driven young girl.
- Driven to Madness: Spencer's mental breakdown. Until it's revealed she faked being crazy to get Mona to underestimate her. This allows Spencer to beat Mona. Sorta.
- Even the Girls Want Her: Shana immediately hits on Spencer seconds after meeting her.
- Extracurricular Enthusiast: sports, academic clubs, you name it.
- Face–Heel Turn: Appears to join the A Team in "I'm Your Puppet". Later revealed to be fake, to learn the identity of A.
- Go-Getter Girl: She has straight A's, is an Academic Decathelon champion and plays lacross and field hockey. Eventually she persues a career in politics.
- Grammar Nazi: She usually corrects other characters, particularly Hanna.Hanna: This isn't a secret it's a bombshell, like a nucular...Spencer: Nuclear. Nu-cle-ar.
- Heroic B.S.O.D.: As of "Out of Sight, Out of Mind".
- Gender-Blender Name: Spencer is traditionally a male name, although it's not unheard of in females in real life. In television, however, it's not that common.
- The Glorious War of Sisterly Rivalry: She doesn't really understand why, although being The Unfavorite has a lot to do with it. That and her sister's abominable taste in men, who constantly go after Spencer.
- Informed Ability: She is apparently very talented in Field Hockey, but we never actually see her play.
- Insistent Terminology: Post-Time Skip, she takes a job supporting grassroots political campaigns. She is not, repeat, not a lobbyist, despite Veronica's claims to the contrary.
- The Lancer: Was this to Alison.
- Mama Bear: to the rest of the group, in contrast to Alison's more manipulative power display.
- The Mole: In the A Team.
- Must Have Caffeine: the other girls won't drink any of the coffee she makes because it's too strong.
- Not So Different: She can be just as bitchy and bossy as Alison.
- Opposites Attract: She and Toby are quite different, both in personality and background.
- The Perfectionist: She is known for being the competitive, overachieving, perfectionist of the group.
- Sanity Slippage: After finding out Toby is in the A-Team. Not clear how much was her actually slipping and how much was planned to get Mona to underestimate her.
- Spoiled Brat: According to Emily's Crowning Moment of Awesome speech.
- Tall, Dark and Snarky: A Stepford Snarker to be exact, given her general Broken Ace arc.
- Token Good Teammate:
- Of the Hastings family.
- Of the A Team, as she has actually joined to expose them rather than to help them.
- Tomboyish Name: Spencer can also be a male name.
- Took a Level in Jerkass: After she and Toby break up she possibly becomes a bigger bitch than Alison. However, this is due to the fact that Toby betrayed her and is in the A-Team, not because of a simple break-up, so, it is somewhat justified.
- The Unfavourite: When Spencer's parents are home they tend to neglect her in favor of Melissa. "The dArkest Knight" establishes that Spencer's parents aren't her actual parents.
- Uptown Girl: with Toby and with Alex, the tennis instructor. She likes those almost as much as she likes her sister's boyfriends.
Emily Fields (Portrayed by Shay Mitchell)"There's always more to a story than people think."
Emily is the star of Rosewood's swim team. She struggled with an on and off relationship with Alison, who at times would say things to put Emily at risk of being outed. Initially when Emily came out, her parents, especially her mother, struggled to handle the news, but now they seem to be accepting of her sexuality.
- Academic Athlete: She is the most athletic of the group and a talented swimmer, and it's mentioned that she gets good grades.
- Adaptation Dye-Job: Reddish-blonde hair in the books. In the TV show she has dark hair.
- Adaptational Sexuality: In the books she was bisexual and had a baby which she gave up for adoption. In the series she is, except for a lackluster relationship with Ben before she figures herself out and a confused grief-induced kiss with Nathan, shown to be exclusivly attracted to women.
- The Alcoholic: In Season 3, because of Maya's death. She eventually grows out of it though.
- Alone with the Psycho: In "The Lady Killer", with Nathan.
- Aloof Dark-Haired Girl: She's a tall, beautiful girl with dark hair.
- Ambiguously Brown: Though Emily's father is Asian in the show, implying that she's mixed race. Season 5 confirms that she's half Filipino like her actress.
- Bi the Way: In the books she is bi, but it's averted on the show. Initially she's dating Ben but has feelings for Maya. She then came out of the closet, but Season 3 confirms she was just dealing with grief when she kissed Nathan. Averted by the Powers That Be who state that she is gay.
- The Big Girl: Being the most athletic of the Liars.
- Brainy Brunette: She gets good grades and has dark hair.
- Calling the Old Man Out: When mother freaks out at the idea of her and Maya even studying together, Emily tells her "For the first time, I am ashamed to be your daughter."
- Cartwright Curse: Out of her four canon love interests, two are dead, one was almost killed, and one was put on a bus. And she also had feelings for Alison.
- Coming-Out Story: Emily was thrown out of the closet by their nemesis.Emily: Why did you think I would take Maya to the dance?
Emily: You thought I wanted her as my date. Why?
Hanna: “A” sent me a picture of you and Maya kissing. So, can I just ask — You took Toby to the dance, but then you took that picture with Maya?
Emily: [Pregnant paus] ... I think I know what I want. ... But if I say yes to Maya, everything would change. You know it would.
Hanna: Yeah, it would. You wouldn’t have to pretend you’re someone you’re not.
Emily: But what if I’m wrong? What if I’m not … that person?
Hanna: Emily, you’re not signing a contract. You were Emily dating Ben and now you’re Emily dating Maya. We love Emily. No one cares who you’re with.
Emily: Really? Have you even met my parents? Mr. and Mrs. Military and their perfect daughter...
- Duet Bonding: She and Paige became closer after singing a duet of P!nk's "So What?"
- Four-Temperament Ensemble: The Phlegmatic. You do not want to see her choleric side. She is even worse than Spencer.
- Girl Next Door: Introduced as the perfectly obedient daughter and girl next door type.
- Heroic B.S.O.D.:
- Has a moment of this in the season 2 finale, when Maya's corpse is found.
- After killing Nathan in "The Lady Killer", which even required a Cooldown Hug.
- Lesbian Jock: Emily definitely fits the lesbian part. Whether or not being a swimmer counts as being a jock is debatable, but Maya has called her such on occasion.
- Lipstick Lesbian: She's shown to be feminine and fashionable (maybe a Tomboy with a Girly Streak since she is also an athete).
- Military Brat: Her father is in the National Guard and spends most of the series stationed away from Rosewood. In the second season, it looks like Emily may move to Texas with her parents for a year, but she convinces them to let her stay with Hanna instead. In the Time Skip between 6A and 6B, Wayne is killed in action, leading Emily into a downward spiral that she only starts to pull out of when she returns to Rosewood.
- Morality Pet: For Alison. Out of the four other liars, Alison is closest with Emily.
- Near-Death Experience:
- She and Paige were almost killed by Nathan in "The Lady Killer".
- In the second half of season 3, when Emily climbs out of an elevator that was stuck and seconds later, it re-activates and falls down with Jason still on it.
- Near-Rape Experience: In Season 1, but she's saved just in time by Toby.
- Nice Girl: She is the sweet and loyal "good girl" of the group.
- O.O.C. Is Serious Business: Emily's is consistently depicted as a kind-hearted person who can forgive almost any offense, so if she's chewing you out, then it means that you have well and truly screwed up.
- Passionate Sports Girl: The most athletic of the liars.
- Race Lift: Emily is portrayed by Shay Mitchell who has mixed Filipino and Irish heritage. In the book, Emily is just plain Caucasian.
- Took a Level in Badass: In the beginning, "A" considered her to be the weak link, and repeatedly referred to her as such. By season 4, she is in many ways the strongest of the Liars. Mona even lampshades it.
Alison DiLaurentis (Portrayed by Sasha Pieterse)"Friends share secrets. That's what keeps us close."
Alison was the "It Girl" and the Queen Bee of Rosewood High School until she mysteriously disappeared. One year after her disappearance, her body is found buried in the backyard of Maya St. Germain's house later confirmed to not be her, which used to be hers. However, she is constantly remembered in flashbacks and has also appeared to the Liars through dreams in the present day.
- The Ace: The reason why she was the "It Girl", since she is attractive, smart and charismatic.
- Adaptational Heroism: She's still an Alpha Bitch, but she's nowhere near as horrible a person as she was in the books. She's not the Big Bad and, after her return to Rosewood, seems to be trying to shed most of her Alpha Bitch traits.
- A Day in the Limelight: "The First Secret" has Alison as the main protagonist for a change, since the whole episode is a flashback to the Halloween before her disappearance.
- Almost Kiss: With Toby in a flashback shown in the season 4 premiere episode; they're interrupted by his mother right before their lips touch.
- Alpha Bitch: She has her own Girl Posse - the Liars - and is at the top of the social pyramid. She's willing to do anything to stay there, including blackmail and bribery.
- Ambiguously Bi: It is unknown whether Alison actually was an Armored Closet Gay who had feelings for Emily or she was just manipulating her.
- Asshole Victim: She might have been only 15 when she died though she's not actually dead, but she managed to make so many people hate her that just about every other supporting character in the show had a motive for her murder.
- The Atoner: The time she spent on the run has apparently made her realize just how much damage she did as Alpha Bitch. In "Whirly Girl", she even tries to make amends to Mona and says that the awful person she used to be is gone. Her words during her fight with Mona in "Miss Me x 100" cast some doubt on whether or not she is genuinely trying to change her ways, though:Alison: All I had to do was say "I'm sorry" and Mindy and Cindy were begging to be my friends again.
- Big Damn Heroes:
- She runs into a fire to save Aria, Hanna, Emily, and Mona.
- She stops the buzzsaw trap that A used on Emily in "Now You See Me, Now You Don't."
- Big Sister Worship: While not actually her sister, she adored her brother's girlfriend and became just like her... which isn't a good thing.
- Bi the Way: Depending on whether she was being manipulative or not, we're not told either way.
- "Blackmail" is Such an Ugly Word: She blackmailed Paige and Byron.
- Broken Ace: By Season 5, she's clearly damaged by the hell she's gone through.
- Chekhov's Skill: She learned how to hold her breath for extended amounts of time. Doing so allowed her to survive being buried alive.
- Consummate Liar: The biggest liar of all the Pretty Little Liars.
- Cooldown Hug: Gives one to Hanna when she walks into her house and finds her finishing an extra meal, which prompts the girl to start crying because she couldn't stop herself from eating more and more.
- The Corrupter: To the other four Liars. She gets Hanna to get into bulimia, for instance, and even assists Aria in trashing Byron's office and framing Meredith for it.
- Cruel and Unusual Death: She was beaten up with a hockey stick and buried alive afterwards! She is later revealed to have survived, though.
- Dead All Along: Remember when Ali was missing? Oh yeah, she was actually dead. Buried under her parent's gazebo since the night of her alleged "disappearance". Subverted as "Now You See Me, Now You Don't]]
- Death Glare: According to her mother, she was an expert at it by age five.
- Even the Girls Want Her: Especially Emily who was in love with her.
- Everyone Loves Blondes: As the blonde school diva. Not loved by everyone though, since she has a lot of enemies.
- Faking the Dead: She survived a blow to the head and being buried alive, but disappeared afterwards to make her attacker think she had died.
- The Friend Nobody Likes: A dark deconstruction with Alison. While everyone in town hates her, the Liars put up with her. However, they spent most of season five wondering why and turned on her when she continued to lie to cover her tracks. They even suspected her of murder and did everything they could to get her arrested.
- Heel Realization: Being in prison makes her realize how horrible she was to her friends. By time they realize she's being framed and reach out to help make things right, she feels she's the one who owes them an apology.
- Jerkass: Was known for being cruel, selfish, and deceitful.
- Jerk with a Heart of Gold: At least she is to the other four. Particularly in her present day appearances.
- The Leader: Mostly Type I, but also Type III and Type IV.
- Manipulative Bitch: Often using other people as tools in her manipulations.
- May–December Romance: Had this with Ian, although it is unknown if she was just using him...
- Morality Pet: After her disappearance, she turns into this for her older brother Jason.
- Ms. Fanservice: Particularly in season 1, where she appeared wearing only a bikini on some flashbacks.
- Noble Profession: Post-Time Skip, she becomes a teacher at Rosewood High.
- Not Quite Dead: Confirmed at the end of "Grave New World".
- Or Was It a Dream?: Every time she appears in the present, there are ambiguous circumstances that make the viewer think that she could still be alive.
- Posthumous Character: Or not, since she actually comes back and is revealed to be still alive.
- Properly Paranoid: Being almost murdered will do that to you. She has a short list of people that she trusts
- Secret Identity: As Vivian Darkbloom.
- Secret Relationship: With Ian, and possibly with Ezra Fitz as well, during the summer before her disappearance.
- Spotlight-Stealing Squad: In-Universe. Her funeral was a huge event that pretty much the whole town attended to.
- That Man Is Dead: In "Whirly Girl" she tells Mona that the awful person that the "Alison DiLaurentis" grave was made for is gone.
- Token Evil Teammate: Compare her to her Girl Posse, the Liars.
- Took a Level in Kindness: In her present day appearances at least. She seems much nicer compared to her flashback appearances. The present appearances of her are only dreams. It's later confirmed they're not.
Mona Vanderwaal (Portrayed by Janel Parrish)"It's easier to forgive an enemy, than it is to forgive a friend."
A former loser who was tormented by Alison (yet still idolized her), Mona and Hanna became really close friends after Ali goes missing, and become the top popular girls of Rosewood High. She's witty and can be mean at times, but treats Hanna like a sister and seems to get along with the other Liars as well. The second season finale reveals that she's A, and she's sent to an asylum after being diagnosed as insane. She returns to school after "getting better" in the second half of season 3, but continues working with the second A all along, until she's betrayed in the season finale and almost burnt alive with the Liars. She is promoted to main character status in the fourth season.
- Adaptation Dye-Job: Blonde in the book, brunette in the TV show.
- Adaptation Expansion: In the original book series, Mona dies when she tries to kill Spencer. While the same scene happens in the Season 2 finale, she manages to survive. Everything from that moment onwards has been created exclusively for the TV series.
- Adorkable: Before Alison's disappearance.
- Alpha Bitch: In early Season 1.
- Ambiguously Bi: She is EXTREMELY fond of Hanna. "A Is For Answers" hints that she was attracted to Ali as well.
- Ambiguously Evil: In Season 4, after her supposed Heel–Face Turn. It's still unclear if she has genuinely ended her vendetta against the Liars.
- Ascended Extra: Her role wasn't that influential in the first season, but she gradually starts gaining more importance as from the second season onwards. In season 4, she becomes a main character.
- Big Bad: For the first two seasons, though none of us know this until the end of the latter. In Season 3, she becomes The Dragon, while pretending to have reformed, until she's expelled from the A Team in the finale. She becomes an anti-hero in Season 4, but returns to Big Bad status in Season 5A, after she bands together an army of Ali haters to work against her. Ali ultimately takes the role from her near the end, when she goes rogue and starts her own army.
- Big Bad Duumvirate: With Charles in Season 3A. It seems that at the start Mona and Charles/Big A were working together as partners, but Big A eventually took the game away from her and made it entirely his.
- Big "NO!": Upon discovering the RV was gone.
- Bitch in Sheep's Clothing: Zig-Zagged in regards to Hanna: On the one hand, she used her friendship with Hanna to gain inside info on the girls, making her more effective as A. On the other hand, she seems to truly care about what happens to Hanna.
- Brainy Brunette: One of the few characters who can match Spencer intellectually. She usually tries to downplay it.
- Darker and Edgier: As the series progresses, her character becomes much darker than the light-headed girl in the beginning.
- Deadpan Snarker: Now that she's been revealed as A, she indulges in this on occasion.Spencer: "If you so much as touch one hair on their heads, I will make you very sorry!"Mona: (smirking) "Looks like someone's been skipping her anger management classes."
- Deal with the Devil: Invoked. She describes her arrangement with the true A as this. Basically, she became The Dragon and gave control of the A-team over to the true A and in exchange, the true A arranged free passage in and out of Radley for her. Now, whether or not she was telling the truth about that is open to interpretation.
- The Dragon: To the second "A". She also sort of becomes this to Ezra Fitz in Season 4, but clearly does not want to be in his employ.
- Evil All Along: Is revealed to be the first "A".
- Evil Former Friend: Mona was Hanna's best friend and later turned into her worst nemesis.
- False Friend: Mona is Hanna's best friend but only uses this to gather information on how to take the girls down as "A".
- The Fashionista: Along with Hanna, she is stylish and interested in fashion.
- The Friend Nobody Likes: To the Liars. Even before she was revealed as A, only Hanna liked hanging out with her. After she is revealed to be A, she's generally kept around because she's useful and Hanna still likes her a little.
- Girlish Pigtails: In flashbacks, the pigtails were part of her dorky appearance.
- Good Girl Gone Bad: She used to be a nerdy harmless girl who was frequently bullied by Alison in the past. She changes after she becomes popular.
- Heel–Face Turn:
- She's trying to convince Rosewood that she's made one, but "Mona-Mania" confirms that she is definitely still on A's side.
- She makes one for real in "A dangerous gAme".
- Heterosexual Life-Partners: With Hanna, after Ali vanishes from the picture. They later grow apart, as Mona was revealed to be in the A Team, but their distance is bridged a little in the season 4 premiere. It will probably never be what it was, though.
- Hollywood Nerd: Before Alison went missing.
- If It's You, It's Okay: Mona is completely heterosexual by her own admission, but she jokingly tells Hanna that she's totally go gay for her.
- It Meant Something to Me: Despite having used her position as Hanna's best friend to help her attack the girls as "A", she tells Hanna this in the Season 4 premiere:Mona: I really did love you... (Beat) and I really was your friend.
- Lovable Alpha Bitch: Sometimes. She's certainly not loveable when she's bullying Lucas.
- Meganekko: In flashbacks. For some reason, after she became popular she stopped using glasses (presumably for popularity). It's possible she got contacts though...
- Might as Well Not Be in Prison at All: During her stint in the Radley Sanitorium, she continues to act on instructions from the A-team and communicate with them. She even manages to leave for a night in "This Is A Dark Ride."
- Near-Death Experience: A tries to kill her in "Turn of the Shoe".
- Never Found the Body: because she's alive.
- Not Quite Dead: In 'Welcome To The Dollhouse' it's revealed that she wasn't killed, and the attack from 'Taking This One To The Grave' was actually a kidnapping.
- The Nicknamer: Coming up with nicknames, especially mean ones, are part of her heritage as Alpha Bitch from Ali
- Obfuscating Insanity: In the third season.
- Obfuscating Stupidity: She seems a bit dumb and ditzy initially, but in "The Naked Truth" she reveals herself to be smart enough to help Emily hack into Tamborelli's system. And of course, this is taken even further when she's revealed to be part of the A team.
- Playful Hacker: Reveals to be a very skilled hacker in "The Naked Truth".
- Sanity Slippage: In the season 2 finale, but it's later revealed to be obfuscation.
- Sixth Ranger: With the Liars.
- Sixth Ranger Traitor:
- Mona pretends to get texts from "A" and bonds with the girls over it. It is later revealed that Mona is A.
- She regains her status as the Sixth Ranger in the fourth season premiere.
- Spared by the Adaptation: If the TV series had followed the books, she would have been killed off in season 2. Instead, she appears to have been killed in season 5's midseason finale, but the season 5 finale reveals she's Not Quite Dead.
- Took a Level in Jerkass: After Alison's disappearance, she reinvented herself from the quiet, mousy girl she was into a new It Girl, and total bitch. She even adopted Alison's insult for Lucas, "hermie".
- Well-Intentioned Extremist: For all her Jerkass behavior in forming the Mona Army in Season 5, she seems to be honestly concerned that Alison's return is going to be bad for the rest of the Rosewood student body.
- With Friends Like These...: She only seems to get along with Hanna. The other girls only tolerate her for the most part and it's clear they don't completely trust her.
- Woobie, Destroyer of Worlds: She was completely psycho as A but we do have to remember that she had no friends.
Acquaintances of Aria Montgomery
"I guess we’re all going to have to just pitch in a little bit more around here."
Byron is Aria's father and a college professor at Hollis. Shortly after Alison's disappearance, he moves the family to Iceland for a year as a sabbatical. He had an affair with a student prior to the moving, and was discovered by Aria and Alison. It's the first secret A uses against Aria and the Liars, threatening to expose it to Ella.
- Amicably Divorced: With Ella, in the third season. They get married again (with Aria officiating!) in season 6.
- Commuting on a Bus: In the first half of season three. He's there for most of the second half, though.
- Dark Secret: His affair with Meredith. Garrett later reveals an even darker secret: Byron and Ali met up on the night of her disappearance, due to her extorting him about the affair.
- Do You Trust Me?: Invoked in the second half of season three; he asks this to Aria after she finds the pages of Ali's diary containing their encounter.
- May–December Romance: With Meredith.
- My Greatest Failure: His brother Scott committed suicide, and Byron has since then regretted not being able to help him.
- Off-Screen Breakup: Both times he broke up with Meredith, it was off screen. Also, he divorces Ella in the six months timeskip between seasons two and three.
- Overprotective Dad: Particularly after learning of Aria and Ezra, going as far as to telling Aria to change her outfits for school because he's concerned about "who she could be dressing for" (and Ezra didn't even work at the school anymore at the time).
- Red Herring: After his blackmail at the hands of Alison was revealed, he's treated as the main suspect both in canon and fanon. While it hasn't been 100% proven, Aria and the fanbase seems convinced he isn't the murderer.
- Secret Relationship: His affair before the series begin. Also, in the second half of season one, he develops a secret relationship with Ella after the two reconnect.
- Teacher/Student Romance: With his university student Meredith.
- Your Cheating Heart: Cheated on his wife with Meredith a year before the series begin.
Ella Jane Montgomery
"People aren't dolls. You can't just play with them and put them back in the box."
Aria's mother and Byron's wife (later ex-wife), who later becomes a substitute teacher in Rosewood High (and a full-time teacher after Ezra gives up the position). Ella believes in treating her children as friends, not as property. She has mentioned that she doesn't want to push into Aria's private life, and she thinks that Aria should be allowed to keep secrets.
- Amicably Divorced: With Byron, in the third season.
- Betty and Veronica: She's Betty, while Meredith can be seen as Veronica.
- Bourgeois Bohemian: Could be seen as this, due to her artistic tendancies.
- Cool Teacher: After she becomes a teacher in Rosewood High.
- Hollywood Dateless: Views herself as this (hence the quote below the image) after divorcing Byron. This is why Hanna and Aria later enlist her on a dating site.
- May–December Romance: With Zack, the coffee shop owner. They later broke up.
- Off-Screen Breakup: She and Byron divorce between seasons. But they marry again onscreen in season 6.
- Open-Minded Parent: She is much more open than Byron, and has stated that she treats her children more like friends, not an authoritarian figure. The best example is probably how she was more open to Ezra and Aria's relationship than Byron. She was shocked and mad, of course, but later (thanks to some Character Development of her own) comes to accept them, unlike Byron who gets Ezra fired instead.
- Save Our Students: The reason why she completes Emily's test for her, despite it compromising her job.
- Secret Relationship: After learning about his affair and leaving her house, Byron and her reconnect and start secretly seeing each other again.
- Shipper on Deck: For Caleb/Aria, after seeing them talking really close. She also mistook a conversation between Spencer and Ezra as the two of them being in a secret relationship. Ella has pretty much been founding the crack ships in the series by now.
- Your Cheating Heart: Her husband cheated on her with a student. And Zach tried to cheat on her with an unwilling Hanna.
"You lie and cheat but you draw the line at hypocrisy. You're such a role model."Aria's little brother with whom she is close to who has some secret activities
- Alliterative Name: Mike Montgomery
- Demoted to Extra: In Season 3, he stops appearing entirely before returning in Season 4. Subverted in season 5B, where his role becomes pretty important.
- Only Sane Man: Along with Caleb in 5B, as he's the only one who understands that maybe, going to the police could be helpful in fighting -A.
- Out of Focus: He does not appear at all in season 3. Unlike other cases, his absence is not justified at any given point.
- Remember the New Guy: He is still referenced several times in Season 3 despite not appearing once.
- Shirtless Scene: Many in season 5B, since Cody Christian muscled up for a recurring role on Teen Wolf.
"Fear is the number one motivator."
A new resident of Rosewood who is hired as literature teacher in Rosewood High at the beginning of the series. Ezra meets Aria in a bar shortly before classes begin and the two connect and make out, only to meet each other later as student and teacher in Rosewood.
- Adaptation Expansion: In comparison to his book counterpart, who is a pretty minor character in the book series.
- Ambiguously Evil: For most of the second half of Season 4.
- Big Bad: In Season 4, he has his own team working for this book including Mona Vanderwaal and CeCe Drake. Though, he is much less antagonistic once the truth about the book comes out into the open.
- Big Bad Ensemble: With Charles Dilaurentis in Season 4.
- Book Worm: How he connects with Aria, who is a bookworm herself.
- Break the Cutie : Ezra is the most friendly,adorable and innocent young man.He had a very hard time with his family. When his ex girlfriend Maggie got pregnant,his mother paid her to leave town and have abortion,which is the reason why Ezra left the family.Then Ezra thought that he was the father of the child,until in first half of season 4 he found out he is not the father and Maggie lied to him about his paternity.He later got engaged with Jackie Molina,until she broke off the engagement.In season 1 finale,Aria broke up with him because she thought he still has feelings for Jackie.Later in season 4, he was shot in New York by Shana and almost died.Even after all of this he still remains positive.Until he went to South America with his new girlfriend and she was either killed or abducted by revolutionaries,which left Ezra with PTSD and is broken.
- Chick Magnet: His love interests include a total of four girls: Aria, Jackie, Simone and Maggie.
- Cool Teacher: He is well liked by his fellow faculty members and by his students.
- Disappeared Dad: An unintentional example though, since he didn't know about it. And then it turns out he's not the father anyway.
- Hidden Depths: We don't learn more about his backstory until the third season.
- Hot Teacher: Aside from Aria and his other love interests, Spencer, Jenna and Hanna have remarked on his good looks as well.
- Locked Out of the Loop: Ezra is the only one of the main characters' love interests to not know about the second A. It's ultimately subverted. He knows about the second A because of his surveillance to get information for his true crime book.
- Lonely Rich Kid: Became this after he got Maggie pregnant in high school, which made him abandon his family after seeing how easily his mother could make problems disappear with money.
- "The Reason You Suck" Speech: Delivers one on his mother in "Hot Water".
- Secret Relationship: With Aria. And with Alison as it turns out.
- Shout-Out: Given the fact that he's a literature buff, his name is probably one to poet Ezra Pound and author F. Scott Fitzgerald.
- Tall, Dark and Handsome: Ian Harding's height is 5ft 11in, is also dark-haired, and considered handsome on the show.
- Teacher/Student Romance: With Aria. And Alison apparently.
- Near-Death Experience: When he was shot by Shana in the season 4 finale.
- Traitor Shot: In the season 4 summer finale.
"Bad boys got nothing on mean girls. Guys have a fight, there’s a punch it’s over. Girls don’t fight fair. They gang up, keep secrets, plot. They can cut you down with a look."
Noel is a popular jock and a student in Rosewood High. He has feelings for Aria and briefly dates her, ending things when he discovers that Aria is seeing Ezra. Noel attempts to blackmail Ezra with this information, but ends up getting framed by A (for apparently stealing mid-term exams) and gaining a suspension. In the second season, he returns when said suspension ends, and begins a romantic relationship with Mona.
- Big Man on Campus: A popular handsome rich boy.
- Bitch in Sheep's Clothing: Well, a jerk in nice-guy clothing. He seemed really pleasant when introduced. Then his relationship with Aria fell apart, and so did the facade...
- "Blackmail" is Such an Ugly Word: He tries to blackmail Ezra when he learns of his relationship with Aria.
- The Bus Came Back: He returns to school in season two, though.
- Chick Magnet: Noel has been shown to be very popular with girls.
- Implied Love Interest: Was this to Mona, since although it's mentioned many times that they're dating in season two, we don't see much interaction between them.
- Jerkass: He acts like this towards the main characters, specially towards Aria since she chose Ezra over him.
- Jerk Jock: The resident high school jock and a Jerkass.
- Jerkass Has a Point: His page quote is pretty dead-on, at least as far as the mean girls in Rosewood are concerned.
- Just Friends: With Alison. Neither were romantically interested in one another
- Life of the Party: He frequently throws wild parties.
- Off-Screen Breakup: How he breaks up with Mona.
- One Head Taller: With all three of his canon love interest.
- Put on a Bus: In the first season, after he fails to blackmail Ezra, he's framed by A and is suspended from school.
- Really Gets Around: He dated Aria, Jenna and Mona in the first two seasons alone.
- Secret Keeper: Knew Alison was alive the whole time.
- Tall, Dark and Handsome: He's good-looking and played by 6'1 Brant Daugherty.
"Sometimes what people believe is best for you is not really what's best for you."
Holden is a childhood friend of Aria's who hasn't seen her in a very long time. He has been living in Portugal with his family and returns to Rosewood halfway through season two. He's very sweet and caring towards Aria, but just as a friend. He loves martial arts and secretly practices it, despite having a heart condition that could cause his death if he's not to careful about it.
- Canon Foreigner: He does not appear in any of the books.
- Childhood Friends: An old friend of Aria as their fathers were also friends.
- Commuting on a Bus: He is a Recurring Character in Season 3, but he had so few appearances that people often forget about him. He hasn't appeared in almost twenty episodes by now, so it's pretty safe to assume he's been Put on a Bus.
- Ill Boy: He has a heart condition, but that doesn't stop him from fighting, even if it may lead to his death.
- Just Friends: With Aria. Both are fine with it, though.
- Martial Arts Uniform: Wears one when Aria goes to see him practice.
- Mistaken for Gay: By the rest of the Liars, initially. Hilarity Ensues when Aria doubts about it too.
- Mistaken for Junkie: When Aria finds something in his bag that looks like cocaine.
- Nice Guy: Was always a good friend to Aria.
- Undercover as Lovers: Aria and Holden pretended to be dating in front of their parents during season two, so she could see Ezra and he could go to a fight club.
"You guys have history, that's rough."
Andrew is a Rosewood High student, almost as smart as Spencer, who he seems to be friends with.He first appears briefly in season 3, then in season 5 he connects with Aria and they have a brief romance, while signs seem to pile up to suggest he's more than what he seems...
- The Ace: He's one of the best students of Rosewood High.
- The Archer: He's implied to have helped Alison cheat her way to an archery trophy.
- Betty and Veronica: Veronica to Ezra's Betty in season 5B.
- Heel–Face Turn: He seems to be hedging closer and closer to the edge of it each time he appears in 5B. Might have crossed it with his spying on Melissa's call in 'Welcome To The Dollhouse'.
- Nice Guy: At least at first he seems to be nicer than Ezra.
- No Good Deed Goes Unpunished: He was trying to catch "A" to impress Aria and prove himself worthy of being her boyfriend in Season 5B. Instead, he is arrested and accused of being "A" with Aria being the most vocal about his guilt during Season 6A.
- Out of Focus: After his appearances in season 3 he disappears completely until season 5B.
- "Reason You Suck" Speech: Gives one to the Liars after he is proven innocent of being "A" and released from jail during Season 6A.
- Red Herring: Seems to be this in regards to the -A storyline in Season 5B.
- Shirtless Scene: In one of his early appearances he and Spencer engage in some friendly Strip Decathlon, which leads to this.
"Listen, sweetie. I'm not in high school. You don't have a say in this."
Meredith is a former student at Hollis who had an affair with Aria's father prior to Alison's disappearance. She wished for Byron to leave his wife and be with her, but instead he broke the affair after Aria and Alison trashed his office, pretending to be Meredith and left for Iceland. In the third season, she becomes the history teacher of Rosewood High.
- Adaptation Name Change: From Meredith Gates in the books to Meredith Sorenson.
- Betty and Veronica: She's Veronica while Ella's Betty.
- Frameup: Aria and Alison frame her up for the destruction of Byron's office, prior to Ali's disappearance.
- Hot Teacher: In the third season.
- Near-Death Experience: Lucas sets a cabin on fire to kill Mona, yet he doesn't succeed and almost kills Meredith instead.
- New Old Flame: She begins to date Byron again after he divorces Ella.
- Put on a Bus: Sent on her way to get medical help towards the end of season 3.
"t's all romance and sacrifice in your little Paris garret. Except you determine what's sacrificed, not him."
Ezra's estranged mother, with who he parted ways when he came to Rosewood. She tracks him down in the third season, and is initially introduced as nice, but later we find out she's not as pleasant as she seemed to be. Dianne does not approve Ezra's relationship with Aria, and has warned her not to bring her son down after he's kicked out of Hollis.
- Canon Foreigner: Does not appear in any of the novels.
- Good Is Not Nice: She's not evil, but is by no means nice.
- Grande Dame: Has some shades of it.
- Manipulative Bitch: Shown in how she bribed Maggie into getting an abortion, moved her out of town and had her raise her grandson in secret, keeping it from Ezra.
- Missing Mom: Played with. Ezra hasn't seen her in seven years prior to season 3, but that was just because he didn't want to see her.
- My Beloved Smother: Not only to Ezra, but to his brother Wesley as well. She expects highly from both of them, and since she does not like to be disappointed (as she has been with Ezra) she enforces her behaviour on Wes, supressing his true feelings and desires.
- "The Reason You Suck" Speech: Delivers one to Aria in the very first episode she appears. In return, she gets one from her son after the truth about Maggie and Malcolm comes out.
- Rich Bitch: Takes this Up to Eleven!
- Spell My Name with an "S": Whether it's Diane or Dianne is debatable.
Acquaintances of Hanna Marin
"When they find the maniac who did this to you, I will kill him. After I kill him, I will sue him."
Hanna's single mother, who works at a bank in Rosewood. She's a kind, wise woman and has a very good relationship with her daughter Hanna and her friends. Her ex-husband Tom, Hanna's father, left her and Rosewood prior to the beginning of the series. She also has a complicated relationship with the police, particularly with agent Wilden.
- Adaptation Expansion: Her book counterpart isn't very close to Hanna, and barely appears in the story at all before she's Put on a Bus to Singapore.
- Adaptation Dye-Job: Has reddish-gold hair in the books, but brown in the TV show.
- Amicably Divorced: With Tom, although it's implied that this wasn't so much the case when they did get divorced, but after time passed by and she came to accept it.
- Glamorous Single Mother: As of season 3, minus the single part.
- Good Bad Girl: Implied in a conversation with Ted.
- Heroic B.S.O.D.: After running over Wilden with her car.
- Hot for Preacher: In season 3, she begins to date a pastor.
- Mama Bear: She will do anything to protect her daughter.
- May–December Romance: She forced herself into this with Darren, in order to prevent Hanna from being arrested.
- Meet Cute: When she meets Ted.
- Open-Minded Parent: She's shown to be a supportive mom to Hanna in many situations.
- Out of Focus: When the second half of season three begins, Ashley is not seen, and Hanna is living with her grandmother instead. She shows up a couple of episodes later, but an explanation for her being missing is not provided.
"Knowing the right questions is better than having all the right answers."
Caleb is a street-smart new kid at Rosewood High, who has a checkered past and illegally hacked into computers for money when he first moved to Rosewood. He is found by Hanna and Aria living at the school because of troubles at his adoptive parents' house, which prompts Hanna to invite him to stay at her house, secretly, without letting Ashley know (although she eventually accepts him).
- Berserk Button: Don't mess with Hanna.
- The Bus Came Back:
- He returns in the season 1 finale.
- Literally in Season 4, when he goes to Ravenswood. He planned to get on the next bus back with Hanna, but he stayed behind at her request, in order to help Miranda.
- Canon Foreigner: Caleb did not exist in the books.
- Cool Down Hug: Gives one to Emily after she kills Nathan in "The Lady Killer".
- Dark and Troubled Past: He tries to avoid talking about his experience in the foster system, but what he did tell is not quite nice.
- Deadpan Snarker: More and more as the series progresses.Hanna: I almost killed you!Caleb: With a pink furry lamp, Hanna?
- Eating the Eye Candy: When Hanna and Caleb are in the shower (he's bathing, she isn't) and he turns around, she likes what she sees...
- Foster Kid: Caleb was given up by his biological mother when he was five years old, leading him to live in different foster care homes and with different foster parents.
- Heterosexual Life-Partners: With Lucas, the only guy in his school he genuinely likes, until his Face–Heel Turn in season 3.
- Near-Death Experience: He was almost killed by Nathan in "The Lady Killer". He also has two of these during his time on Ravenswood.
- Official Couple: With Hanna. Not anymore as of season 5.
- Playful Hacker: His hacking skills can also be useful to the girls.
- Put on a Bus: Literally, in season 1, when he breaks up with Hanna.
"Icebergs turn over. They just roll over and turn up all that buried junk. You don't want to get too close when that happens."
Lucas is a member of the yearbook committee who was tormented by Alison in the past. He becomes good friends with Hanna after the two work together on the yearbook and the prom and eventually develops a crush on her, but steps aside when she begins dating Caleb Rivers. In the third season, he makes a Face–Heel Turn and his character grows darker as the series continues.
- Adaptation Dye-Job: His book counterpart is blonde.
- Adaptation Name Change: His last name is change from Beattie in the books to Gottesman.
- Adorkable: At least, until his Face–Heel Turn in Season 3, he was a geeky Nice Guy.
- Ambiguously Evil: It's unknown whether he's actually evil or just plain creepy, but in the season 4 premiere the reveal that he's the one who gave Emily the massage makes him look really suspicious...
- Blackmail: Mona has been blackmailing him for an uncertain amount of time.
- Creepy Child: Well, he's not a child, but still...
- Creepy Monotone: Specially in "Kingdom of the Blind". He was way too calm while he lit his papers on fire.
- Darker and Edgier: As the series progresses.
- Dogged Nice Guy: An unsuccessful one.
- The Dragon: To Mona in her army.
- Face–Heel Turn: From Season 3 he becomes a darker character.
- Heterosexual Life-Partners: With Caleb, until season 3.
- Hollywood Nerd: At least he used to be a shy nerdy boy, until season 3.
- Homeschooled Kids: As of "Mona-Mania" onwards.
- I Want My Beloved to Be Happy: In the second season, he puts his feelings aside to let Hanna be happy with Caleb. His thoughts about this from the third season onwards are unknown.
- Intelligence Equals Isolation: Before Hanna and Caleb, at least.
- Just Friends: With Hanna. It was used to hurt him and Hanna in a school dance episode, with A forcing Hanna to dance with him, which causes her boyfriend Sean to break up with her and to hurt Lucas as well.
- Playful Hacker: Not as talented as Caleb or Mona, but still counts.
- Pyromaniac: Let's see, lighting up some documents on fire? Check. Almost burning Hanna in the process? Check. Burning down an entire gazebo to try to kill Mona? Check.Caleb: Dude, you tried to set fire to my girlfriend.Lucas:(with a straight face) Yeah sorry about that, I was being ground down by trivial bureaucracy.
- Used to Be a Sweet Kid: Until the third season. Lampshaded by Hanna, who comments on it early in that season.
"Your mom may be hot, Hanna, but she’s not hot enough to make that go away."
A police detective who arrests Hanna for shoplifting in the Pilot episode. Ashley begins a sexual relationship with him in return for him dropping all charges against Hanna. He is later put in charge of the investigation on Alison's murder.
- Ambiguous Allegiance: Is he on the side of the law or his own? Or is he assisting A? It's hard to guess at times.
- Asshole Victim: When he's found dead in season 4.
- The Bus Came Back: He was put off the invastigation after four episodes, then returns to the case from season 2 onwards.
- Death by Adaptation: He never dies in the books.
- Dirty Cop: Darren uses some questionable methods while he is investigating the murder of Alison although he doesn't do anything that is actually illegal. After Hanna gets arrested for shoplifting her mom starts a relationship with Darren to keep Hanna from getting in trouble. Thankfully she kicks him out of the house eventually. He usually targets Hanna for interrogation and harassed Emily in one episode.
- Informed Attribute: He was apparently a "wild partier" in the past.
- Jerkass: Wilden would often harass the girls in the process of the investigation.
- Life of the Party: Formerly, according to him.
- May–December Romance: With Ashley. Possibly with Alison too.
- Mysterious Past: He seems to know Mona from before the series begin, but this has yet to be addressed.
- Near-Death Experience: Ashley runs him over with her car after he threatens her. He survived, though, thanks to Jenna and Shana who passed by.
- Put on a Bus: Veronica is capable of getting him off the case, but he returns in "Over My Dead Body" when the Liars are put in police custody.
- Rabid Cop: Starts to fall into this as the series progresses. He threatens Ashley in an episode by telling her to shut Hanna up, or he would.
- Secret Relationship: Possibly, with Alison in Cape May.
"Training a horse, it's an art. You have to bend its will until it knows you are its master. That's how you are gonna feel when I'm done with you. Welcome to the family, sis."
Hanna's soon-to-be step-sister. Kate is the daughter of Isabel Randall, Tom Marin's fiancee, who comes to live at Rosewood with him later on. She seems to be poised and well-brought-up, but eventually reveals her desire to make Hanna's life miserable.
- Adaptation Distillation: Her book counterpart has a much bigger role in the story.
- Adaptation Dye-Job: Her hair is brown in the books.
- Bitch in Sheep's Clothing: She initially comes out as a normal, fashionable teenage girl, but after overhearing Hanna insulting her mother she begins showing a more agressive and bitchy side.
- Brown Eyes: The season 2 Kate only.
- Informed Ability: Horseback riding and sailing are some of her mentioned talents.
- Karma Houdini: Played with. While her framing Hanna was revealed to the school, her dad immediately pulled her out before we could see her get punished.
Acquaintances of Spencer Hastings
"You're not supposed to watch me so closely."
Peter Hastings is the wealthy father of Spencer and Melissa Hastings. He is a successful attorney and is all about winning and being the best. He is the picture perfect husband and father who controls a seemingly picture perfect family.
- Adaptation Dye-Job: Like in the case of his daughters, his book counterpart has blonde hair.
- Ambiguously Evil: The shady traits he shows after the truth about Jason comes out have fans wondering...
- Amoral Attorney: Much more than his wife.
- Dark Secret: His affair with Jessica.
- Informed Attribute: His liking of sports such as tennis.
- Luke, I Am Your Father: He had an affair with Jessica Di Laurentis which resulted in the birth of Jason Di Laurentis.
- Non-Idle Rich: He's still practising lawyery, exercises and plays tennis on a regular basis.
- Papa Wolf: Despite not showing much affection, he seems to care for Spencer at times.
- Parental Favoritism: To Melissa over Spencer.
- The Patriarch: Of the Hastings family.
- Playing Gertrude: He is only about 15 years older than the actors who play his children.
- Throwing the Fight: He and Spencer play doubles with a potential client and his daughter. Then he tells Spencer to let them win so that they would hire him.
- Your Cheating Heart: He had an affair with Jessica DiLaurentis many years ago, as well as a son with her. All while still being married to Veronica.
"Our family doesn't handle imperfection very well."
Veronica is Melissa and Spencer's mother. She is a well-educated woman and a caring mother for both girls (although, like her husband, tends to favor Melissa). She is a workaholic and is often out of the house. However, behind the perfect facade, she has her own flaws.
- Adaptation Dye-Job: Like her husband and daughters, she's blonde in the books.
- Amoral Attorney: Sort of. She did take the Reynolds case, but he ended up being innocent so it's quite debatable.
- Dark Secret: Melissa's unfortunate abortion.
- Hello, Attorney!: She's a good-looking lawyer.
- Ill Girl: In the first season, she reveals she had breast cancer, but it was discreetly cured due to being discovered at a very early stage
- Mama Bear: Not only to Spencer, but has this instinct towards all of the Liars, shown as how she hugs Alison in a flashback and how she gets Darren kicked out of the case when he harrasses Emily.
- Open-Minded Parent: Becomes a lot more open-minded in the third season.
- Parental Favoritism: Same case as her husband.
- Put on a Bus: She goes to London with her husband in the third season, but makes an impresively quick return when Spencer is sent to Radley.
- Shipper on Deck: Surprisingly, she turns into this for Spencer/Toby by season 3, after accepting their relationship at last. She even helps her make lasagna for their anniversary!
- Tall, Dark and Snarky: She has her snarky comments, specially when she's on the job.
"I don't feel like I need to be the best and the first anymore. All those things that used to matter just... don't seem that important."
Melissa is Spencer Hastings' seemingly perfect older sister. Melissa has everything her sister has ever wanted. She was accepted to the Wharton School of Business with nothing but praise from her parents. What she doesn't already have, she's not afraid to take, such as the barn. The thing is, her boyfriends seem to be attracted to her younger sister instead.
- Adaptation Dye-Job: Like the rest of the Hastings clan, she's blonde in the books.
- Aloof Big Sister: She acts like this at times with Spencer.
- Aloof Dark-Haired Girl: Due to Adaptation Dye-Job, since she was blonde in the books (but still aloof).
- Always Someone Better: She's seen this way by her younger sister Spencer.
- Ambiguously Evil: She's always been hostile towards Spencer, but the fandom are split as to whether she's willingly involved with the A game.
- Brainy Brunette: Like the rest of the family, she's extremely smart.
- Broken Bird: She seems truly broken after Ian's murder, so much that she even warms up to Spencer with time. Not to mention after the death of her unborn child.
- Brother-Sister Incest: She and Jason hooked up in the Hastings' lake house. Granted, she didn't know they were related, but still...
- Commuting on a Bus: In the third season, she doesn't appear as much as the previous ones.
- Extracurricular Enthusiast: Similar to Spencer, she was an overachiever involved in many extracurricular activities.
- The Glorious War of Sisterly Rivalry: With Spencer, although both are smart and pretty.
- Green-Eyed Epiphany: She runs back into Ian's arms after finding out Wren with Spencer, claiming that their time apart and her break-up with Wren made her see that Ian was the right one for her.
- Happily Married: Appears to be this with Ian, although it's for a brief time.
- Informed Ability: Apparently, she's more talented than Spencer in many areas, but we have yet to see that in practice.
- '20s Bob Haircut: Cuts her hair like this in the second half of season 3.
Dr. Wren Kingston
"None of us are perfect, we all come with baggage."
Wren Kingston is the fiancée of Melissa Hastings, who became attracted to Melissa's younger sister, Spencer, which causes the two of them to break up after she finds them making out. He is a physician who works in a hospital. He currently has a rotation at Rosewood Community Hospital, and also currently volunteers at Radley Sanitarium.
- Adaptation Expansion: A lot of his parts in the tv series were added and are not oi the books.
- Adaptation Name Change: Wren was an Asian with a last name of Kim in the books, but here he is played by British actor Julian Morris.
- Hospital Hottie: A handsome doctor who attracts both Melissa and Spencer.
- Morally Ambiguous Doctorate: Implied in what Spencer overhears during her stay at Radley.
- New Powers as the Plot Demands: In addition to being a good medical doctor, in Season 3 he also becomes a psychologist.
- Nice Guy: In the first episode, when the Hastings parents show their clear favoritism for Melissa, Wren is genuinely nice to Spencer and reassures her. This is put in doubt in season 3, after Spencer hears some rumors at Radley that seem to indicate the contrary.
"You know what they say about quicksand, Spence. The more you struggle, the faster you sink. And you're sinking fast."
Melissa's ex boyfriend, who she later starts dating after breaking up with Wren. He had a brief relationship with Spencer before he broke with Melissa the first time, while she was still 15, something only Ali knew about. He is appointed the field hockey team's coach in early season 1.
- Adaptation Dye-Job: He has brown hair, as opposed to his book counterpart, who is blonde.
- Covert Pervert: Implied by the videos of the girls (and of Jenna and Toby) that Alison finds.
- Happily Married: Appears to be this with Melissa, until he's killed.
- Hot Teacher: Well, coach actually, but still...
- May–December Romance: With Spencer. And it is later revealed that with Alison as well.
"Different is good. I like different... this town has too much of the same."
Toby is a troubled young man from Rosewood who lives near Emily's house. He's a shy, quiet boy who was framed by Ali for the prank that made Jenna Marshall lose her sight, and spent some time in juvie because of that. He quickly becomes the lead suspect in Alison's murder investigation, and is regarded as an evildoer by almost all Rosewood. He begins a romantic relationship with Spencer by the end of season 1.
- Adaptation Expansion: He has a bigger role in the tv series, where he remains very much alive, unlike the book series.
- All Girls Want Bad Boys: According to the people of Rosewood, at least, this fits her relationship with Spencer. And then we learn that he's in The A Team, which gives a whole new meaning to this.
- Almost Kiss: With Alison in a flashback shown in the season 4 premiere episode; they're interrupted by his mother right before their lips touch.
- Big Damn Heroes: When he saves Emily from being raped by Ben.
- Bodyguard Betrayal: Toby is Spencer's protector but he is really much better at luring her into the arms of "A".]]
- Brother-Sister Incest: Forced by Jenna. Although they're not actually siblings...
- The Brute: Possibly his role in The A Team.
- Butt Monkey: Nothing goes right for him. Ever.
- Deal with the Devil: In Season 4. He trades Mona's RV with A for information about his mother's suicide.
- Evil All Along: Subverted. He was working as a double agent.
- Frameup: Alison frames him for "The Jenna Thing" prior to the start of the series. Only the Liars, Toby and Jenna know the truth.
- Misunderstood Loner with a Heart of Gold: How Toby Cavanaugh is played at first. Later on, he drops the "Misunderstood Loner" part.
- Near-Death Experience: In Season 2, A makes him fall off a notable height while he's working. Luckily, it failed.
- Not Blood Siblings: With Jenna, although forced to it.
- Only Child Syndrome: Prior to her father's second marriage and Jenna's arrival.
- Opposites Attract: He and Spencer are quite different, both in personality and background.
- Perpetual Frowner: Given how much shit he goes through, its not hard to see why.
- Spared by the Adaptation: He ends up committing suicide in the books, but is still alive in the TV series.
- Traitor Shot: The subject of one at the end of "The Lady Killer."
- Troubled, but Cute: A motorcycle-riding Misunderstood Loner who has a relationship with one of the main girls.
- Undercover as Lovers: In "The Remains of the A" he accompanies Hanna to a dance as her date to "scare off a creep that wanted to date her", although it's actually due to a lie Hanna told Ashley and it was the first thing that came to her mind.
"I don't need a special flashlight to know what people around here are hiding. This school is filled with phonies and liars. They're everywhere."
Toby Cavanaugh's blind step-sister. She's a sly, smart young woman who had a very complicated rivalry with Alison after she turns down Ali's offer to join her group briefly after moving into town. The Liars accidentally caused her blindness in a prank intended for Toby that went horribly wrong. She does not approve of Toby's relationship with Spencer, but eventually Toby pushes her aside to be with Spencer.
- Ambiguous Allegiance: It's pretty tough to tell what side of this whole mess Jenna lands on. Some fans have theorized that she's working with A, while others have suggested that she's actually A's enemy and will later work as an ally to the main characters. Really, it's anyone's guess.
- Adaptation Expansion: Her role in the tv series is much larger than in the books. Plus, she's still alive, while her book counterpart isn't at this point.
- Adaptation Name Change: From Jenna Cavanaugh to Jenna Marshall.
- Aloof Dark-Haired Girl: She totally fits this trope physically and personality wise.
- Ambiguously Bi: It's implied in "A Dangerous GAme" that she's in some sort of relationship with Shana, yet the nature of said relationship is never clarified. At least for now.
- Blind Seer: How does Jenna know so much, yet sees so little?
- The Bus Came Back: She does return, finally, in "A DAngerous GAme". An explanation for her absense is not provided, though.
- Brother-Sister Incest: She forced her step-brother Toby into this. True, they aren't really blood-related, but still...
- Deadly Prank: Became blind when she was the accidental victim of one by the protagonists.
- Deadpan Snarker: Has some traces of this.
- Heel–Face Turn: Well... maybe. In "If These Dolls Could Talk", she claims that she no longer hates The Liars, having been moved by Hanna saving her life. However, she doesn't act much differently towards them.
- Laser-Guided Karma: The Deadly Prank that blinded her happened while she was in the middle of forcing Toby into Brother-Sister Incest (probably not for the first time either).
- Near-Death Experience: In "Eye of the Beholder" someone (presumably A) tries to kill her by locking her up in Jason's house and blowing it up. She is saved by Hanna just in time.
- Not Blood Siblings: The excuse she uses to force Toby into sleeping with her.
- Obfuscating Disability: As of "If These Dolls Could Talk", Jenna has recovered her eyesight and has been pretending to be blind. When confronted by the four main characters, she claimed she was doing it to protect herself from the person who tried to burn her alive in "Eye Of The Beholder". She drops the act in "That Girl Is Poison" though.
- Put on a Bus: After "This is a Dark Ride" she is not seen again. It is later mentioned that she changed schools.
- Spared by the Adaptation: Killed in the books. Almost killed twice on the show, but eventually she comes back.
- Sunglasses at Night: Stops using them from "That Girl Is Poison" onwards.
Acquaintances of Emily Fields
"Emily, I still don't understand, but I love you. You're my child, and nobody hurts my child."
Pam is Emily's mother. She is usually very supportive of Emily's decisions, except when it came to Emily's sexuality early on in the series. At first she disapproved of Emily's sexuality but she eventually came to terms with it, and accepted Emily for who she is.
- Adaptation Name Change: Her name is Kathleen in the original book series.
- Cure Your Gays: Pam initially thought Emily could be cured.
- Heteronormative Crusader: Her initial reaction to her daughter's homosexuality was... locking herself in the kitchen and crying. But then she even gets Maya sent away. She gets better, with time.
- Mama Bear: Particularly in Season 1 when she stands up to Paige's father and protects Emily from his accusations. It's also the first time she defends Emily's homosexuality.
- Naďve Newcomer: At the police station.
- New Powers as the Plot Demands: She suddenly becomes a part of the Rosewood Police Department in season 3, despite not having shown interest in law enforcement previously. It's also possible she's just doing an intership, though. It's never clarified.
- Overprotective Mom
- Put on a Bus: She's send to Texas to live with her husband in the second season. She wanted to take Emily too, but at her insistance Em stays at Hanna's house, for various months.
- What, Exactly, Is His Job?: At the police? It's still unknown to the viewership.
Maya St. Germain
"I admit I like to live life in the grey area, but the way I feel about you is crystal clear..."
A new resident of Rosewood whose family has just moved into the house that used to belong to the DiLaurentis family. She and Emily began to bond, and the two soon began to develop romantic feelings for each other.
- Adaptation Expansion: Her character was given much more relevance than her book counterpart, which was more of a supporting character.
- Bi the Way: She is bisexual (exposed to The Liars and Pam Fields).
- The Bus Came Back: In season 2.
- Death by Adaptation: She survives in the original book series, but she is killed in the Season 2 finale.
- Lipstick Lesbian: Like Emily, she's shown to be feminine and stylish.
- New Old Flame: She's Emily's first girlfriend, and the two reconnect in season 2 after breaking up in the first season.
- Off-Screen Breakup: Emily and Maya don't break-up while she's gone, but their lack of communication eventually leads to this.
- Put on a Bus: Pam manages to send her away to a rehabilitation program.
"I wish I had fought harder for you."
Paige is a talented swimmer and a member of the Rosewood High School's swim team. In the absence of Emily Fields, Paige had become the top dog of the swim team and was aiming to become the swim team captain. When Emily came back, she felt threatened. She was up against Emily for the Anchor Leg and tried to sabotage Emily via intimidation. However, soon after, Paige comes out as a lesbian to Emily, her long time crush.
- Action Girl: She can definitely hold her own in a fight. She was able to save Spencer from the person in the Queen of Hearts costume by beating said person up.
- Armoured Closet Gay: Was this when she was first introduced, but eventually came out in season 2. In Season 3, it's revealed that this is because Alison actively made her think being gay was something to be ashamed of.
- The Bus Came Back: She briefly appears in two episodes at the end of season 2, at first hoping to rekindle her relationship with Emily, then agreeing to just be friends. Starting with season 3, she sticks around for good and starts dating Emily again.
- Canon Foreigner: She didn't appear in the books.
- Driven to Suicide: Narrowly averted in the backstory. Alison was apparently so cruel to her, that she considered this. The only reason she didn't is because she realized doing that would mean "Alison would win.".
- Duet Bonding: She and Emily became closer after singing a duet of P!nk's "So What?"
- Girliness Upgrade: She's initially less feminine than Maya or Samara, and is far more aggressive and competitive (including almost drowning Emily), and yet she's not quite the Butch Lesbian due to the makeover she gets in season 3: the writers decided to make her Hotter and Sexier and so she was presented again with longer hair, sexier clothes and more Lipstick Lesbian tendencies.
- Heel–Face Turn: After we find out that she's gay.
- Hotter and Sexier: As the series progresses, Paige gets a makeover, long hair and sexier outfits.
- Informed Ability: According to Spencer, she's a great field hockey player (a penalty was named after her!) but like with Spencer, we never get to see her play.
- In-Series Nickname: "Pigskin", by Alison.
- Jerk Jock: Prior to her Heel–Face Turn.
- Lesbian Jock: As a swimmer and a hockey player. There's even a penalty named after her.
- Locked Out of the Loop: By season 3, she and Ezra are the only ones of the main characters' love interests to not know about the second A. Emily opens up about the second A in the season 3 mid-season finale (in order to protect Paige, who is being framed by A), before finally explaining everything in the Halloween special. After that, Paige is actively involved with fighting A alongside the Liars (and Caleb).
- Mistaken for Murderer: By Spencer, Hanna and Aria (especially the first one).
- Near-Death Experience: She and Emily were almost killed by Nathan in "The Lady Killer".
- New Old Flame: To Emily in season 3.
- Passionate Sports Girl: Other than a competitive swimmer, she's apparently also a hockey player.
- Put on a Bus: After Emily breaks up with her at the end of season 1, Paige disappears.
- Transparent Closet: Fans supected her sexuality ever since her first appearance, before it was clarified.
"Just because two things happen at the same time doesn't mean they're connecter."
Emily's old neightbor who is now a police officer. In season 2, he assists Detective Wilden with the investigation of Alison's murder. He's in a secret relationship with Jenna Marshall prior to the start of the series, and he's killed in the Halloween train.
- Ambiguously Evil: He's definitely shady, but he was innocent of the murder charges leveled against him, and was about to help Spencer before he was murdered.
- Evil All Along: Not EVIL per se, but he was introduced as a very nice guy, before his murky past and ambiguous intentions became apparent.
- He Knows Too Much: The reason why he's murdered by Darren Wilden in season 3.
- Heel–Face Door-Slam: He's murdered the night he plans on telling Spencer everything he knows.
- Jerk with a Heart of Gold: Perhaps. He didn't kill Alison or Maya after all, was genuinely crushed when Jenna ditched him, and seemed to hold feelings for Spencer. He was about to tell her everything he knew when he was killed.
- Mistaken for Murderer:
- In "The Lady Killer", it is confirmed that he didn't kill Maya.
- Also, in "This Is A Dark Ride", he tells Spencer he didn't kill Alison, but Jenna genuinely believes he did.
- Nice Guy: At first. He becomes more of a Jerkass to the Liars when they find out about him and Jenna.
- Secret Relationship: With Jenna. The Liars eventually find out, but the couple come out to the public after the Liars are arrested in the second mid-season finale.
Nathan St. Germain/Lyndon James
"When I think about Maya, I want to think about how she lived, not how she died."
Nathan is Maya St. Germain's cousin, who arrives to Rosewood after the death of Maya.He enters Hollis College, where he is studying to become an architect, and becomes fast friends with Emily. He's revealed to be actually Maya's stalker, not her cousin, who followed her from True North, and the one Maya seeked protection from.
- Ax-Crazy:He was a mentally ill man from the beginning.
- Evil All Along: He's revealed to be Maya's stalker, not her cousin.
- If I Can't Have You: The reason why he killed Maya.
- Love Makes You Crazy: His actions when it comes to Maya and later Emily, as he is a psycho stalker.
- Long-Lost Relative: To his cousin Maya. Later revealed to be a lie.
- Secret Identity: In "The Lady Killer" we learn that Nathan never really existed.
- Stalker with a Crush: He's revealed to be Maya's Ax-Crazy stalker who also killed her.
- Taking You with Me: Already dying, he grabs Caleb's gun and fires. Who he was aiming at is unknown, but the bullet hits Caleb.
- Yandere: For Maya and Emily, and the responsible for Maya's death.
"If you don't want a commitment, we won't get the large popcorn"
Samara Cook is a friend of Emily Fields who tried to help Paige with her coming out to her father. She works for an LGBT Pride group as part of her extracurricular activities. She dated Emily during the first half of Season 2.
- Preppy Name: She's also an actual prep student.
- Put on a Bus: She breaks up with Emily (thanks to A, of course) and never appears again.
- Romantic False Lead: For Emily... shortly after she's Put on a Bus, Maya returns.
- Satellite Love Interest: To Emily. Justified because,unlike Maya and Paige, she only appears in a few episodes.
- Suspiciously Similar Substitute: Her character shared a lot of personality traits with Maya; shortly after Samara left, Maya is brought back due to this.
Acquaintances of Alison DiLaurentis
"You can leave Rosewood, but Rosewood will never leave you."
Jason is the older brother of Alison DiLaurentis. He had an interesting relationship with his late sister; though they often fought, they were both conniving and willing to keep each other's secrets. Jason attended high school and was friends with Ian and Garrett, and returns to Rosewood after Ian's death.
- Brother-Sister Incest: He and Melissa hooked up before the series begin, and shortly afterwards he learns that they were half-siblings.
- Erotic Dream: Starred in one of Aria's dream fantasies.
- Frame-Up: At the end of "Over my Dead Body", it was revealed that Jenna and Garret tried to make him think he killed his sister.
- Heel–Face Turn: After he's revealed to be Spencer's half-brother. t's actually more probable that after his sister went missing was when he first turned, although the girls stop seeing him as suspicious when Spencer discovers that secret.
- Mr. Fanservice: From Season 2 on due to being played by a more attractive actor.
- Otaku: In a flashback in Season 2, Jason gets angry at Alison. When Aria asks what was up, Alison says that he thought she had stolen "one of his Japanese cartoon porn books", implying he is (or was) a Hentai fan.
- Off-Screen Breakup: With CeCe, prior to the start of the series, and (judging from what we could see in one of the Pretty Dirty Secrets webisodes) it did not end up well.
- Off the Wagon: Drove drunk in "crAzy".
- Ship Tease: With Aria, and had quite a bit with Spencer prior to being revealed to be her half-brother.
CeCe Drake/ Charlotte Di Laurentis
"Take it from me, you're always better off with a really good lie."
- Alpha Bitch: Has some traces of it.
- Big Bad: of seasons 3-6. She takes over the role of "A" from Mona Vanderwaal.
- Big Sister Worship: The subject of such from Alison, despite not being sisters. Turns out that they actually are
- Blatant Lies: she told Emily that she didn't know the "beach hottie" in Cape May is.
- Canon Foreigner: CeCe does not appear in any of the books. Though, she is somewhat based on the real Alison from the books.
- The Corrupter: According to Jason she was a seriously bad influence on Alison.
- Daddy Issues: Much of her sociopathy is because her father refused to accept that she is transgender and forced her to grow up away from her family.
- Deconstructed Character Archetype: Of the Hidden Villain. As A, she is initially presented as a dangerous Manipulative Bastard who can predict the Liars' every move and come up with the perfect counter-move. However, once her identity is revealed and all the intrigue stripped away, she comes off less as "cool" (like the typical Hidden Villain) and more as tragic and pitiful. In the end, even her former victims can't help but pity her.
- Driven to Suicide: She plans to kill herself in "Game Over, Charles", but is talked out of it by Alison and her friends.
- The Fashionista: And makes a living out of it too.
- Near-Death Experience: Aria pushes her from a height, but she manages to get up and walk away when the Liars aren't paying attention.
- The Reveal: She is Charles, Alison's brother, who transitioned to become Charlotte and then began masquerading as CeCe Drake. Oh and she's also "A".
"I'm still here bitches, and I know everything."
- Big Bad: Both "A's" are the Big Bad of their respective seasons.
- Big Bad Duumvirate: Mona and CeCe shared the identity of "A" in Season 3A, before she fell into The Dragon. This is back into play now that we know Red Coat is Charles' accomplice.
- Catch Phrase: Tends to end her messages with "Bitch" or "bitches", though not quite to the point of being a Verbal Tic.
- The Chessmaster: Manipulating, blackmailing, and threatening the girls with text messages.
- Dark Is Evil: "A" makes appearances as a figure with black leather gloves, a black hood, dark pants, and dark shoes.
- Hidden Villain: A is the main antagonist of the show as they constantly blackmail the girls and has even attempted to kill them on several occasions. Their identity still is a mystery.
- In the Hood: The infamous "A" costume is a black hoodie.
- Manipulative Bastard: Whoever takes this role (male or female) is clearly a skilled manipulator. Just ask the Liars.
- The Man Behind the Man: To their followers.
- The Omniscient: A has, on multiple occasions, demonstrated not only uncanny knowledge of people and their secrets, but actual prediction of future events. (Example: Emily picks a box of Alpha-Bits from the school cafeteria cereal selection, only to find that all of the pieces have been replaced with A's. Since we see no evidence that anyone else experienced this, that means that A not only knew that Emily would choose that brand of cereal, she knew exactly which box of it Emily would end up with.)
- One-Letter Name: Just goes by A.
- The Reveal: In "UnmAsked", "A" is revealed to be Mona Vanderwaal. She is sent to Radley Sanitarium for treatment, where CeCe Drake began visiting her and took away the game.
- This Is for Emphasis, Bitch!: At times you wonder if A is really Jesse Pinkman.
"She's everywhere but she's no where!"
- Anti-Hero: She saved Mona, Aria and Emily from the burning lodge. But, she leaves Hanna behind and presumably only rescued the others so she and CeCe can continue their game.
- Big Bad: Of Season 3 and the first half of Season 4. Though it is revealed that she was actually a decoy.
- Big Bad Duumvirate: Turns out she was actually this with CeCe, the real "A".
- Bitch in Sheep's Clothing: Big time. She pretends to be an innocent and damaged victim of "A", claims to have run away from home and tells some sob story, and then ends up living, and eventually developing a relationship, with Emily. She's actually Red Coat and the Black Widow, who is CeCe's Dragon and accomplice and Emily makes sure she pays for it.
- Canon Foreigner: She doesn't appear in any of the books.
- Cool Mask: Wears an Alison mask to hide her identity from even the A-Team. Though, "'A' Is for A-l-i-v-e" suggests that she just hangs around in it, even when its burned on one half.
- The Dragon: To CeCe. She's her second in command and top ally in the "A" games. She was also somewhat in a Big Bad Duumvirate.
- Decoy Antagonist: More like Decoy Big Bad, since she's definitely an antagonist. She's somewhat part of a Big Bad Duumvirate with CeCe, the real Big Bad, and is her Dragon. However, the two of them had Mona and the A-Team believing it was Sara in charge.
- Hidden Villain: Both her real identity and her disguises. The Liars assumed Red Coat was gone, just thought Black Widow was suspicious and never suspected Sara.
- In the Hood: Her infamous red coat has a hood. She may have also worn the black hoodie at times.
- Limited Wardrobe: Mostly seen in a red trench coat. Until it is revealed that she is Sara Harvey, who was also the Black Widow.
- The Mole: Presumably the reason she began living with Emily in the first place.
- One-Letter Name: When using the identity of "A".
- Only Known by Their Nickname: Pretty much all fans knew her as was Red Coat and the Black Widow.
- The Reveal: She is actually Red Coat and the Black Widow.