Foster was the Huggies baby at the age of 16 months in 1986. In 1995, he was one of the stars in the movie Above Suspicion starring Christopher Reeve, Joe Mantegna and Kim Cattrall. He is perhaps best known for his role as Justin Stewart, the child who assumed the mantle of the Blue Turbo Ranger in the fifth season of Fox Kids' Power Rangers Turbo, making his debut for the show in the film Turbo: A Power Rangers Movie. Foster reprised the role in an episode of Power Rangers In Space.