Hailey Tju is an American actress of Chinese and Indonesian heritage, born and raised in Southern California alongside her sister, actress Brianne Tju. She achieved widespread recognition for her starring role as Pepper Silverstein in the Nickelodeon series Bella and the Bulldogs (2015–2016), a performance that established her as a prominent young talent in children's television. Her career achievements include providing the voice for Marcy Wu in the critically acclaimed Disney Channel animated series Amphibia (2019–2022) and appearing in the 2024 film Uglies.