
Quick answer — Yuu Sugimoto voices Maido-kun in Hamtaro, Neteru-kun in Hamtaro, Akemi in She, The Ultimate Weapon and 10 more characters.
Yuu Sugimoto voices Maido-kun (Hamtaro), Neteru-kun (Hamtaro), Akemi (She, The Ultimate Weapon), Catherine (Gintama Season 2 Part 2), Shiji Bau (Sentenced to Be a Hero), Yuka (Kimi ni Todoke: From Me to You), Yumi Miyamoto (Lupin the 3rd Vs Detective Conan: The Movie), Kintarou Tooyama (The Prince of Tennis II) and 5 more.
Maido-kun is voiced in Japanese by Yuu Sugimoto.