Mona Vanderwaal (Janel Parrish) are a former unpopular lady at Rosewood exactly who longed as approved towards Alison’s classification and you may try constantly teased of the Alison. She features bullying Lucas, far in order to Hanna’s irritation. Following appearance of A beneficial, Mona sees that Hanna is acting surprisingly, and you will feels envious you to Hanna features rekindled their friendships having Aria, Emily, and you can Spencer. She hates Caleb and you can renders attempts to crack Hanna and you can Caleb upwards, even asking Lucas to possess assist (even when he declines).