Theron Kay is a Japanese-American composer, orchestrator, and arranger. A versatile artist originally from San Jose, CA, Theron has contributed to a wide array of projects across film, television, and media. His collaborations span companies such as Marvel, Amazon, and Illumination, and recent credits include Jentry Chau vs. The Underworld and WondLa (Seasons 2-3). In 2025, Theron made his feature film debut with Grace Point, starring John Owen Lowe (Unstable).

Theron has worked alongside acclaimed composers such as Tom Holkenborg (Junkie XL), Michael Kramer, and Neal Acree. His experience also extends to the sync and trailer industry, where following his tenure as an in-house composer at Eternal Music Group, he now leads the team as Head of Production.

He currently resides in Los Angeles with his wife, Kate, and their dachshund, Inu.