Portia Gibbons is one of the three secondary villains in animated television horror film My Little Pony: Orange Exorcist. She is voiced by Grey DeLisle, who also voiced Princess Azula in Avatar: The Last Air Bender (2005-2008), Samantha Manson in Danny Phantom (2004-2007), Riley Daring in The Replacements (2006-2009), Brianna Buttowski in Kick Buttowski (2010-2012), Daphne Blake in Scooby-Doo series, and Lizzie "Elizabeth" Divine in Code Name: Kids Next Door (2002-2008).
Little is known of Portia before her first encountered with Fauntleroy Foster, but it is known that she is the leader of a group of bikers, and two of her members were Tiger Claw (Eric Bauza) and Baxter Stockman (Phillip LaMarr).
Portia, along with Tiger Claw and Dr. Baxter Stockman stops at a small convenience store in Ponyville. Tiger Claw and Portia held Applejack (Ashleigh Ball) hostage while Stockman was making trouble for Applejack's older brother named Big Macintosh (Peter New). When he has Applejack's thrown orange wallet, he wants Big Macintosh to ask him politely for the orange wallet back and address him as "Dr. Stockman", so Big Macintosh. When Stockman eventually does give Big Macintosh the orange wallet, Portia and Tiger Claw let Applejack go. While she and Big Macintosh get ready to leave, Portia was outside in front of the store, drinking a can of lemon tea as she sees the two siblings inside the car. When Applejack turns on the car, Portia begins smashing the windshield of a car that Applejack was driving. However, Applejack accidentally runs over their motorcycles as revenge for troubling her and Big Macintosh, causing Portia to fume and shout in anger while Big Macintosh praises his younger sister as they drive away.
The bikers stops at Sweet Apple Acres. Portia goes to a barn across from Applejack's house and discovers Tiger Claw dead. When she sees Fauntleroy jumping down, she grabs a meat cleaver. Fauntleroy continues his scope out of the barn, only to have Portia appears and start attacking him with a meat cleaver. Fauntleroy counterattacks by hitting Portia with a baseball bat. When Fauntleroy is trying to kill Flash Sentry (Vincent Tong), he runs into the barn. He is suddenly met by Portia who survived the earlier fight. Enraged, Fauntleroy turns his attention to Flash Sentry by using a meat cleaver to chops off her left hand. Flash Sentry continues running in fear as Portia screams in horror after Fauntleroy chops off her left hand and hacked her to death multiple times with a meat cleaver. Portia's corpse, along with the corpses of Tiger Claw and Baxter Stockman, were found by the authorities and taken away by the paramedics. In the deleted scene, her bloody corpse was found by Pinkie Pie (Andrea Libman) tied to a mahogany chair in Sugar Cube Corner.
- Daughter of Mr. Gibbons and Mrs. Gibbons.
- Rival of Bessie (Amy Poehler).
- Best friend of Gwendoline "Gwen" Wu (Jessica DiCicco).