Here are the Japanese voices for the DagonBallZ characters:

Nozawa Masako....................................................................Son Goku/Son Gohan/Son Goten
Tsuru Hiromi.........................................................................Bulma
Kyouri Daiho..........................................................................Umigame
Miyauchi Kouhei...................................................................Mutenroshi
Tatsuya Naoki.......................................................................Oolong
Furuya Touru.........................................................................Yamucha
Watanabe Nanaseko............................................................Pooalu
Tanaka Mayumi.....................................................................Kulilin/Yajirobe
Furukawa Toshio.................................................................Blue Shogun/Piccolo
Horikawa Ryo........................................................................Vegeta
Nakao Ryuusei.......................................................................Freeza
Wakamoto Norio...................................................................Cell
Shimada Bin...........................................................................Cell Junior
Mitsuya Yuuji.......................................................................(North) Kaio-shin
Yanami Jouji..........................................................................Babidi