Hiroshi Masuoka (増岡 弘, Masuoka Hiroshi; August 7, 1936 – March 21, 2020) was a Japanese actor, voice actor and narrator from Minami, Saitama Prefecture, Japan. He famously voiced the roles of Masuo Fuguta in Sazae-san and Uncle Jam in Let's Go! Anpanman. He also voiced Master Roshi in the last episodes of Dragon Ball Z and all of Dragon Ball GT, following the death of Kōhei Miyauchi. He was last affiliated with the Tokyo Actor's Consumer's Cooperative Society.
Source: “Hiroshi Masuoka (voice actor)”, English Wikipedia (CC BY-SA 4.0), excerpt