Mona Vanderwaal

Mona Vanderwaal is one of the upcoming characters of Rosewood Boys. She is portrayed by Janel Parrish.

She is inspired by the character of the same name from the Pretty Little Liars books and TV series.

Biography
Mona is born on February 18th, 1994 in the USA (presumably in Rosewood,Pennsylvania). by Leona Davis-Vanderwaal and her husband.

She is a very smart person but wasn't happy with her life when Alison DiLaurentis bullied her during the first year of high school. On October 31st, 2008 she planned her revenge by blackmailing her as "-A".

This game continued until the Labor Day 2009 weekend,the night when Alison disappeared. She tried to kill her with a shovel after sending her a creepy message earlier that day,but instead she hit Bethany Young and left her unconscious on the ground.

While leaving the crime scene,she saw Alison DiLaurentis and took her to Lost Woods Resort where she had a room and her -A's lair. She convinced Ali to leave Rosewood because of -A killing her and two months after her disappearance,she befriended Hanna Marin and the two of them became the Rosewood High School queen bees.

On September 2010, a 16-years old Aria Montgomery came back from Iceland and became friend again with Hanna,Spencer Hastings and Emily Fields.

Mona,being angry with them,restarted the "-A game" and blackmailed them until April,where is revealed that she has personality disorder and got locked in the Radley Sanitarium.

On September of the year,she "gave" her game to Charlotte,while telling her all about the Liars. As a new -A appeared,she enjoyed playing again.

With Ali back in town,some months later,she was afraid and planned on faking her death with discovering the new -A (she thought Charlotte was Ali) but instead,she was kidnapped and put in an underground bunker (the Liars will also join it during April/May) until her release in May.

During the Enchanted Forest prom on June 2012, Charlotte DiLaurentis reveals herself as -A to Alison and the Liars. She is then caught by the police and the -A game is done for good.

Trivia

 * Edith started a game like the -A one with her being "Mrs. Unknown" so it's presumed that she talked to her about her -A game.

Spoilers

 * It's confirmed that she will appear in the second episode