Joelle starred as Olivia, the oldest of the three orphans adopted by BoJack's character Horse on Horsin' Around. After the show ended, she moved to England, became a theater actress and developed a British accent. Herb says that she is an actually talented actress. It is revealed that during the run of Horsin' Around she developed an eating disorder because of the writers dressing her in a pumpkin costume on an episode of the sitcom and then writing "fat jokes" about her character.
She currently works at the West End Theater in London. She plays Juliet's Nurse.
Joelle has blonde hair and blue eyes.
On Horsin' Around, she had her hair in a short bob, and she wore a light grey off shoulde top with a blue, red, yellow, and green pattern, a purple and blue skirt, a necklace with a green pendan, and brown boots. In the last seasons of the show her hair is longer, and she wears a black zip up crop top with a floral pattern, blue jean shorts over purple legging, and black boots.
In "Still Broken", she wears a black outfit to Herb's funeral. Her body has also gotten a lot curvier.
In flashback scenes from the set of Horsin' Around, Joelle is portrayed as a stereotypical child actor who doesn't feel that she is getting enough screen time, feeling jealousy toward Sarah Lynn in particular.
- Horsin' Around
Joelle has shown shades of jealousy toward Sarah Lynn due to her character dominating the show in its later years, leaving very little attention for Joelle's character.