Furuya is most known for the roles of Amuro Ray in the original Mobile Suit Gundam and its following Gundam sequels, Star of the Giants, Saint Seiya), Yamcha in Dragon Ball, Kimagure Orange Road, and Mamoru Chiba/Tuxedo Mask in Sailor Moon). He considers these roles as his most important roles.
He also used a pseudonym Noboru Sōgetsu (蒼月 昇 Sōgetsu Noboru?) in the cast of Mobile Suit Gundam 00 for Ribbons Almark's role. Both the narration role and Ribbons Almark were Furuya's first role in a non-Universal Century Gundam series. Shuuichi Ikeda who played Char had his earlier with Gilbert Durandal in Gundam SEED Destiny.