Trinity Bliss

Bliss made her film debut as Tuktirey, known as Tuk, in Avatar: The Way of Water. She was cast for the Avatar sequels in 2017, and filming for the second film had concluded when she was nine. The film premiered in 2022, when she was thirteen.

For the Avatar films, Bliss completed three months of preparation that included Na'vi movement, dialect, free diving, archery, knife work, parkour, and night training. She also attended school on set during the long production schedule. She returned as Tuk in Avatar: Fire and Ash, with the second and third films filmed at the same time to accommodate the young cast.

Bliss played Stella Zhau in the Nickelodeon live-action series The Really Loud House and reprised the role in the television film A Really Haunted Loud House. Her other television credits include Gabriella in Best Foot Forward, Alexa Huh Garcia in The Garcias, and Susan in an episode of Mr. Corman.

Her voice performances include Princess Rita Raspberry in the Netflix series Princess Power and Marzipan in the animated film Glisten and the Merry Mission. She also provided the English voice for Chloe in the video game Final Fantasy VII Rebirth and contributed additional voices to Turning Red and Elio.

Bliss has uploaded song covers and original music since 2021. Her first studio album, Confessions of a Preteen, was released in 2023.

She plays guitar and ukulele and has described songwriting as a form of self-expression. Her publicly released songs include "California Sun" and "We Need Some Love," while her later singles include "You Make Me Wanna Dance" and "Chemistry." She has also contributed the original song "Paradise" to the end credits of The Garcias.

In 2023, Bliss was cast as Cat McCoy in The Life of Chuck, directed by Mike Flanagan and adapted from a short story by Stephen King. The film premiered at the Toronto International Film Festival in 2024 and received a North American theatrical release in 2025.

The role expanded her screen work beyond the family and fantasy projects associated with her earlier credits. Her filmography also includes Tessa Lu in Little Wing and Wendy Bryant in Bone Cold.