Teresa

Teresa is a main character in Hollywood World. She is Courtney's sister, and has a crush on Phineas and a jealousy toward Isabella. Courtney has a bigger conflict with Isabella than her, most likely because of Isabella's friendship with Duncan. Teresa wears a pink shirt and a blue skirt, shoes similar to Courtney's, and has yellow hair. Teresa looks a little like Courtney. Teresa is so far the only OC.

Appearances
We Will Be The Movies: Teresa is excited to see Courtney again. Also, she is with Phineas, Ferb, Isabella, Baljeet and Buford when Phineas asks for an idea to get rid of Chef's food. Teresa has an idea to bury the food, and it works. I Go To Russia: Teresa gets on top of a hill and admits her crush on Phineas. Isabella attacks her after she admits it, but Carly manages to calm her down. Teresa is excited when everything is back to normal in Russia, and really wanted to go home. Sing-Alongie: Teresa is put on Team B. She cries when she's not on the same team as Phineas, but Courtney, with help from Duncan, calms her down.