Toby Fox

Robert F. "Toby" Fox is an American indie game developer and composer. He is best known for creating and scoring the 2015 role-playing video game (RPG) Undertale, as well as Deltarune, a parallel story to Undertale released in chapters since 2018, with five of its planned seven chapters released as of September 2026. Fox developed Undertale almost entirely by himself, and it has been ranked in numerous publications as one of the greatest video games.