Toby Fox (known as Toby Fox or Radiation online) is a friend of Stephen, and they met through

Toby has appeared in various vlogs, such as Bolf! (Day 248 - 7/30/10)Steps of the Waltz (Day 1599 - 4/11/14), and You Guys Are Amazing (Day 2062 - 7/18/15).

Toby is also the creator of Earthbound: Halloween Hack and Undertale. He has also arranged music for Homestuck.

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