Masako Nozawa (野沢 雅子, Nozawa Masako?) (October 25, 1936), born in the Tokyo Metropolitan area, Japan, but raised in Numata, Gunma, is a seiyū and actress affiliated with (and the chairman of) Office Nozawa. Her real name is Masako Tsukada (塚田 雅子, Tsukada Masako?), and her pet name is Mako. Her husband, Masaaki Tsukada is also a voice actor.

As a seiyū, she is most known for the roles of Tetsuro Hoshino (Galaxy Express 999), Kitaro (GeGeGe no Kitaro, first and second series), and Son Goku (Dragon Ball). She has also voiced two separate characters named "Hiroshi", a character in Dokonjō Gaeru, and the character known in the U.S. as "Pidge" in Hyakujūō Golion (the "Lion Force" arc of Voltron).

Source: Wikipedia