Lucy

Lucy Dunn (Lucy Abendroth in the book)(portrayed by Liz Gillies) is a diva. (Amazing) She's a predator. Queen of the school, she decides where people fit in this hierarchy. She stops at nothing to get what she wants, has more purses than scruples and lets no one get in her way. Lucy is smart, popular, stylish, and has learned to manipulate her friends. She has a huge crush on Brett and will do anything to have him, including spreading a rumor about Kendra (her best friend) and Evan to get Kendra and Brett done with while also calling other popular girl Charlotte (Potrayed by Liz gillies co star Ariana Grande) a liar.

Kendra
Kendra is Lucy's "best friend". Brett likes Kendra, but Lucy likes Brett, as does Kendra. Brett asks out Kendra and she says yes, so Lucy becomes jealous and tries to split up Brett and Kendra. So when Kendra and Brett's date ends up a disaster, Lucy takes a shot at Brett. Kendra tries to get Lucy to apologize to Brett, but Lucy takes the opportunity to have Brett, and instead, she walks up to Brett and kisses him. After a cat fight between the two, Lucy and Kendra are no longer friends and Brett picks Kendra. Lucy can't stand it, so she spreads a nasty rumor about Kendra cheating on Brett with Evan.

Brett
Lucy tries impressing Brett because she has a crush on him. Brett and Lucy start dating after Lucy kisses Brett at the movies and she starts driving him insane. After Evan confronts Brett with Patrice, they tell him to apologize to Kendra to get her back, he ditches Lucy and goes back to Kendra. After Lucy spreads rumors about Kendra, Brett dumps Kendra and leaves with his new girlfriend, Lucy.

Evan
Lucy doesn't like Evan because he gets Brett and Kendra back together. She pretends to show gratitude when she's spreading a rumor about Evan and Kendra becoming an item. He believes her and never suspects her 'up to no good.'

Patrice and Archie
Lucy does not like Patrice and Archie because they are unpopular and outsiders

Eddie
It is revealed that Eddie tries flirting with Lucy but she says no. But luckily it was before Brett and Lucy are together. Otherwise, it could have been bad!. But even though she said no, it appears that he is very good and flirting/chatting up girls (apart from Lucy, who does not like it), which is revealed in Hey Kendra. But sometimes the Barry White approach just doesn't work, especially on girls like Lucy: "In your dreams, hobbit!"

Malcolm, Simon and Richie
Because Lucy takes up all of Brett's time and has complete control over him, the three resent her and try plotting to dispose of her in "Bad News".