Mona Vanderwaal

Television Series
Mona Vanderwaal is a Dutch-American student at Rosewood High School. She is a former nerd that used to idolize Alison DiLaurentis in the shadows. She transformed herself to Rosewood's "It" girl along with one of Alison's former friends, Hanna Marin.

Mona, afraid of falling down to the bottom of the social ladder, scolds Hanna for her secret doings, telling her that if she does one thing to bring her down back to "dorkdom," she'll be going down alone. Deep down, Mona will never forget the way Alison treated her, but being popular, there was no time to be sentimental about things from the past.

Mona shoplifts to relieve herself of all the pain. She has never been caught due to the fact that she has become so good at it. She and Hanna became best friends when Alison's crowd got disbanded. Mona figured that Hanna would not give up the chance to become popular. Their friendship stayed strong until the ever so infamous "A" began torturing the girls, forcing Hanna to become closer to them once more.

In the episode "Keep Your Friends Close" Mona heard a rumor that Hanna became skinny thanks to liposuction. Mona broke off their friendship due to anger. When Hanna was hospitalized due to her run in with "A", Mona visited her in the hospital and apologized, realizing that she was mad at Hanna for a stupid reason. Hanna gladly accepts her apology and they become BFF's once again. While visiting Hanna, Mona told Hanna the reason she chose her to be her best friend. At a party, chubby Hanna vomited while on the trampoline. When she realized everyone was laughing at her she bowed, no longer affected by peoples remarks. Mona found that to be a life lesson. Mona believed that if Hanna could get over peoples teasing and ignore it, so could she.

Mona threw a surprise "Welcome Back!" party when she was released from the hospital. Mona and Hanna are still BFF's but not like before. Their friendship isn't as strong, due to the fact that Hanna's relationships with her former BFF's, are growing once again.

Mona is not seen in a few episodes until she appears in "The Badass Seed."

In "Monsters In The End," she destroys a letter from Caleb, expressing his love for Hanna.

She is portrayed by Janel Parrish.