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Entertainment • Video Game Composer

Toby Fox

Toby Fox is an American video game developer, composer, and writer best known for creating the indie role-playing games Undertale and Deltarune.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Toby Fox is an American video game developer, composer, and writer best known for creating the indie role-playing games Undertale and Deltarune. He also composed music for Homestuck and contributed music to other games, including Super Smash Bros. Ultimate and Pokémon titles.

Early life and background

Toby Fox is the professional name of Robert F. Fox, born on October 11, 1991. Available sources identify him as American and note that his early creative work included game-making and fan projects.

Undertale

Fox created Undertale in 2015. The game became widely successful and earned major award nominations, helping establish Fox as a prominent independent game creator.

Deltarune

Fox later developed Deltarune, a separate but related role-playing game. It has been released in chapters and is closely associated with his earlier work.

Music career

Fox began gaining attention as a composer through his work on Homestuck. He has since contributed to soundtracks for other games, including titles associated with Nintendo and Pokémon.

Key facts

  • Fox is best known for the 2015 RPG Undertale, which became a breakout hit and pop-culture phenomenon.
  • He later created Deltarune, a related game project that reuses some themes and characters from Undertale.
  • Before Undertale, he made RPG Maker games and ROM hacks, including EarthBound Halloween Hack.
  • He composed music for Andrew Hussie's webcomic Homestuck in 2009.
  • He has also contributed music to other game franchises, including Super Smash Bros. Ultimate and Pokémon.
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Canadian context

Toby Fox’s work has been widely available and influential in Canada through international game releases, soundtrack distribution, and award recognition in the global indie game scene.

Frequently asked questions

Who is Toby Fox?
Toby Fox is an American video game developer and composer best known for Undertale and Deltarune.
What is Toby Fox’s real name?
His full name is Robert F. Fox.
When was Toby Fox born?
He was born on October 11, 1991.
What is Toby Fox best known for?
He is best known for creating Undertale and Deltarune.
What did Toby Fox do before Undertale?
He made RPG Maker games and ROM hacks, including EarthBound Halloween Hack, and composed music for Homestuck.

References

  1. Wikipedia — https://en.wikipedia.org/wiki/Toby_Fox
    Supports: Birth name, birth date, nationality, occupations, Undertale, Deltarune, Homestuck, early work, and later music contributions.
  2. IMDb — https://www.imdb.com/name/nm4912259/
    Supports: Occupation as game developer and composer, Homestuck and Hiveswap credits, and birth date.
  3. Undertale Wiki — https://undertale.wiki/w/Toby_Fox
    Supports: Alternate names, role as developer and composer, Undertale soundtrack, and avatar-related details.
  4. Nintendo Fandom — https://www.nintendo.fandom.com/wiki/Toby_Fox
    Supports: Nintendo-related music contributions including Super Smash Bros. Ultimate and Little Town Hero.
  5. Wikipedia — https://www.wikipedia.org/wiki/Toby_Fox
    Supports: General biography details and career overview.