
Quick answer — Masako Nozawa voices Gohan Son in Dragon Ball Z, Gokuu Son in Dragon Ball Z, Guilmon in Digimon Tamers and 23 more characters.
Masako Nozawa voices Gohan Son (Dragon Ball Z), Gokuu Son (Dragon Ball Z), Guilmon (Digimon Tamers), Tetsurou Hoshino (Galaxy Express 999), Hisui (Pokémon the Movie: The Power of Us), T0-B1 (Star Wars: Visions), Asura (Asura), Medama Oyaji (GeGeGe no Kitaro) and 18 more.
Gohan Son is voiced in Japanese by Masako Nozawa.