Not much is known about Ava, other than she is described as "dumb as toast" by Brooke. She is also seen to be very flirty with Jake who she meets in The Dance.
Jake is pouring alcohol into Ava's drink, who is dressed as a bunny. Ava compliments him on how he is smarter than he looks, and Jake compliments her as well but calls her "Andrea" by mistake. Ava corrects him and they kiss.
Ava arrives at Brooke's party with Jake and interrupts Brooke and Audrey's conversation. They're later seen kissing until Brooke kisses one of the party guests to make Jake jealous, when she goes back inside Jake follows and leaves Ava.
Later, Ava is looking for Jake and asking several party guests, she looks in the bathroom and finds Grayson's corpse with his throat slit and a pool of blood. She screams in horror, and everyone leaves after looking at the corpse. When Audrey asks where she is going she simply ignores her and runs away with the rest of the party guests.
- Ava is the last character to make debut in Season 1.