Isabela Moner (born July 10, 2001), also known as Isabela Merced, is an American actress and singer. She played the lead role of CJ Martin on the Nickelodeon television series 100 Things to Do Before High School. In film, she played Izabella in Transformers: The Last Knight (2017), Lizzy in Instant Family (2018), and Isabel in Sicario: Day of the Soldado (2018). In 2019, Moner starred as the titular character of Dora in the film Dora and the Lost City of Gold. From 2014 to 2017, she provided the voice of Kate in Nickelodeon's animated television spinoff series Dora and Friends: Into the City!.