Keaton was born Joshua Luis Wiener in Pasadena, California, United States. He has three sisters: Alitzah, Danielle, and Sabrina. His career has included television and film work, with a mixture of live acting and voice work for animations.
Films
1997: Hercules (the young Hercules)
2004: Kangaroo Jack: G'Day U.S.A.! (Charlie Carbone)
Television series
1990–1991: Captain Planet and the Planeteers (incidental, non-recurring characters)
1991: Back to the Future: The Animated Series (Jules Brown)
Adverts, games, etc.
OshKosh B'Gosh television commercial
2002: Spider-Man:The Movie (game) (Harry Osborn)
2003: Dynasty Warriors 4
2004: Samurai Warriors
2004: Onimusha 3: Demon Siege
2004:Spider-Man 2 (video game) (Harry Osborn)
2004: Shellshock: Nam '67
2004 : Metal Gear Solid 3: Snake Eater (Ocelot)
2005: Area 51 (video game)
2005: Psychonauts
Films
1991: All I Want for Christmas (Brad)
1992: Newsies (newsboy)
1996: Same River Twice (Andy)
1996: Judge and Jury
1996: Infinity (David) (credited as Joshua Wiener)
1997: Just Write (cameo)
1998: The Souler Opposite
1999: Chimera House (Roy)
1999: A Murder On Shadow Mountain (made for television; the young Denny Traynor)
2003:The Even Stevens Movie (Mootai/Jason)
Television series
1994: Boy Meets World (two episodes as Roy)
1995: Sister, Sister (one episode as Franklin)
1995–1996: The Secret World of Alex Mack (recurring character Bryce)
1997: Chicago Hope (one episode as Will Peters)
1997: Baywatch (one episode as Todd Rose)
1997: General Hospital (recurring character Tim)
1999: Touched by an Angel (one episode as young Nick Stratton)
1999–2002: The Young and the Restless (recurring character Denny)
2002: Boston Public (one episode as Martin Andrews)
2002:ER (one episode)
2004:Will & Grace (two episodes as Sal)
