Toby Fox

Toby Fox is an American developer and composer behind the 2015 hit indie video game Undertale. In 2018, Toby Fox released Chapter 1 of his game Deltarune, following suit and composing the soundtrack on his own. Chapter 2 followed in 2021, Chapters 3 and 4 in 2025, and Chapter 5 slated for release in 2026, each accompanied by his music with minor contributions from other artists. In 2020, Fox contributed to the OMORI soundtrack. Additionally, under the alias Radiation, Fox composed music for the webcomic Homestuck.