He is best known for his roles as the second Masuo voice actor in Sazae-san and Jam Ojisan in Soreike!
Masuoka began playing Masuo in Sazae-san in June 1978, and he began playing Jam Ojisan on Soreike!
Voice actor Hiroshi Masuoka passed away due to rectal cancer on Saturday, March 21.
Other roles Masuoka has played include Cyborg 009’s 005, Dragon Ball Z’s Kame Sennin (second voice actor), Minami’s father in Touch, and narration in various productions, including Ariyoshi-kun no Shôjiki Sanpo as recently as this year.