With her father's help, Cantrall started a
YouTube series "Hello Kylie", where she reviewed
Disney Channel shows. At the end of 2016, as Hello Kylie, she released her first single "Sleep Is 4 Suckas" alongside independent music label New Muzik Order, which was co-founded by her father. She also made guest appearances on
Bizaardvark and ''
Raven's Home''. At 13 years old, she was cast as the titular character in the television series
Gabby Duran & the Unsittables. As a result, she left public school to focus on her career. she also performed the series' opening theme song, "I Do My Thing". The series was later cancelled in 2021. Also in 2021, Cantrall was featured in the music video of the
R3hab song "Sad Boy" and voiced Savannah Meades in the animated film ''
Ron's Gone Wrong'', her film debut. In September 2022, it was announced during the
D23 Expo that Cantrall would be part of the main cast of the fourth installment in the
Descendants film series, originally in the working title of
Descendants 4, later being officially named
Descendants: The Rise of Red. Cantrall was cast in the title role of Red, daughter of the
Queen of Hearts (who was portrayed by
Rita Ora). In August 2023, Cantrall became the ambassador of TruSkin cosmetics brand, being the brand's first ambassador. In 2024, she started a recurring voice role as
White Tiger in the animated television series
Spidey and His Amazing Friends. In December 2025, it was announced that Cantrall joined as a contestant in
season fourteen of
The Masked Singer, being the first time in which the identity of a contestant is known before the release of the season. In the season, Cantrall serves as "America's Insider", with her role of "Cat Witch" being known to the audience, but not the panelists. At 20 years old, Cantrall became the youngest finalist in the show's history. She finished in third place and had her identity and insider role revealed to the panelists. == Influences ==