
Quick answer — Hideki Takahashi voices Zekrom in Pokémon the Movie: White—Victini and Zekrom, Isshin Shijima in Napping Princess.
Hideki Takahashi voices Zekrom (Pokémon the Movie: White—Victini and Zekrom), Isshin Shijima (Napping Princess).
Zekrom is voiced in Japanese by Hideki Takahashi.