Toby Fox

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Toby Fox is an American video game developer and music composer. He is best known for developing the games Undertale and Deltarune. He has also composed music for the webcomic Homestuck, as well as for the video games Hiveswap, Escaped Chasm, Little Town Hero, Pokémon Sword and Shield, and Super Smash Bros.. He is also known online as FwugRadiation or as Toby "Radiation" Fox.

(Source: Wikipedia)