Eliza Thornberry is a little girl who has the secret ability to talk to animals in The Wild Thornberrys.
- Eliza is voiced by Lacey Chabert who also voices Aleu from Balto II: Wolf Quest and Zatanna in Young Jusitce.
- Eliza met Kyle and Kaytlin, FT Squad members in Kyle and Kaytlin's Adventures in The Wild Thornberry's Movie. Eliza also met Roy Prong, a stubborn teenager from the Beatrice Boarding School in London who eventually formed a strong relationship with Eliza.
- Eliza will meet Ash Ketchum and his friends in Ash's Adventures of The Wild Thornberrys Movie. In the movie, Eliza as well as her sister, Debbie will bond really well with Ash and will form a brother-sister relationship with one another.
- Eliza will join Barney and friends in his adventures series. She will debut in Barney's Adventures of Muppet Classic Theater, and won't reveal her secret to her new friends until Barney's Adventures of The Wild Thornberrys Movie.