Tajja Isen is a Canadian writer, editor, and voice actress. Her first book, the essay collection Some of My Best Friends: Essays on Lip Service, was published in April 2022. As an actress, she is best known for voicing the title character Atomic Betty. She has several other voice credits, including Samantha in Franklin and the Turtle Lake Treasure, Sister Bear in The Berenstain Bears, Pipsqueak in The ZhuZhus, Princess Pea/Presto in the PBS Kids show Super Why!, Jane in Jane and the Dragon, Jodie in Time Warp Trio, Franny's singing voice in Franny's Feet and Jazzi in The Save-Ums!

Franklin and the Turtle Lake Treasure is a children's animated adventure drama film released on September 6, 2006 direct-to-video, based on the TV series Franklin. It was the first Franklin film shown in theaters in Canada and France, as well as the last production in the Franklin series to be traditionally animated.