Daniel John Hardcastle[2] (born 23 March 1989), known online as Nerd³ or NerdCubed, is a British YouTuber, author and actor.

[13] Hardcastle himself also holds a small writing credit for the film, having written two jokes into it when Ashen gave him the script.

[15] Hardcastle began writing his first book, Fuck Yeah, Video Games: The Life & Extra Lives of a Professional Nerd, in 2017.

The foreword of the book was written by founder of Double Fine and game director Tim Schafer, and another a chapter was contributed by YouTuber Stuart Ashen.

[22] Hardcastle is married to Rebecca Maughan,[23] an artist who illustrated Fuck Yeah, Video Games.