Mayumi Yamaguchi (山口眞弓) (born May 12, 1975) is a seiyu from Iwata Prefecture. Her Forte is playing Cool Big Sis and Kid Hero characters who tend to be the Only Sane Man of the group.
Notable roles by Mayumi Yamaguchi:
- Deb (Kristen Johnston) in the Japanese dub of Bride Wars
- Envy in Fullmetal Alchemist (2003 series, darrin'd by Minami Takayama in Brotherhood)
- Forte Stollen in Galaxy Angel
- Gabumon in Digimon Adventure and Digimon Adventure 02
- Jianliang Lee in Digimon Tamers
- Omegamon (with Chika Sakamoto) in Digimon Tamers: The Adventurer's Battle
- MetalGarurumon X in Digimon X-Evolution
- Jianliang Lee in Digimon Tamers
- Gachagiri in Den-noh Coil
- Grandice/Grenmah in Granado Espada
- Leon in Ojamajo Doremi
- Mike and David in Chi's New Address
