Hiroshi Masuoka(増岡 弘Masuoka Hiroshi) (born August 7, 1936) is a prolific Japanese seiyū from Saitama who is perhaps most known for his role as Masuo Fuguta in Sazae-san in Japan, also known as Jam Ojisan in Anpanman. He also notably voiced Master Roshi during the last episodes of Dragon Ball Z and all of Dragon Ball GT following Kohei Miyauchi's death. He currently works for Tokyo Actor's Consumer's Cooperative Society.