Ikue Otani! :)

Do you know who she is? Probably not. She played many character roles and the most important role yet



Other roles she played (courtesy of Wikipedia)

Ashita no Nadja (Rita Rossi)
Astro Boy (Nina)
Bakusō Kyōdai Let's & Go!! (Jiromaru Takaba)
Banner of the Stars (Seelnay)
Brain Powerd (Girl of Orphan)
Detective Conan (Mitsuhiko Tsuburaya)
Doki Doki School Hours(Shizuka Nagare(Iincho))
DNA² (Mashi)
Flint the Time Detective (Obiru)
Go! Go! Itsutsugo Land (Mikan)
Gulliver Boy (Edison)
Hamtaro (Oshare-chan)
Haō Taikei Ryū Knight (Blue)
Harukanaru Toki no Naka de (Fujihime)
Hime-chan's Ribbon (Himeko Nonohara, Princess Erika)
InuYasha (Koryu)
Juuni Senshi Bakuretsu Eto Ranger (Usaki, Butashichi)
Kannazuki no Miko (Sister Miyako, Saotome Makoto)
Keroro Gunsou (Terara)
Konjiki no Gash Bell!! (Gash Bell (episodes 1-141))
Kujibiki Unbalance (Renko Kamishakujii)
Martian Successor Nadesico (Yukina Shiratori)
Monster (Eruza)
Moonlight Mask (Yamamoto Naoto (2nd season))
My Neighbors the Yamadas (Nonoko Yamada)
Nangoku Shōnen Papuwa-kun (Kotaro)
Naruto (Konohamaru)
Naruto: Shippuden (Konohamaru)
Nightwalker (Guni)
Oh My Goddess! (Sora Hasegawa)
Ojamajo Doremi series (Hana-chan, Majo Monroe)
One Piece (Tony Tony Chopper/Chopperman, Sanji (child), Enishida, Fake Nami)
Pokémon series (Pikachu, Corsola, Mime Jr., Glameow, Roselia)
PoPoLoCrois (Papuu)
Poyopoyo Kansatsu Nikki (Poyo)
Sailor Moon: Sailor Stars (Sailor Tin Nyanko / Suzu Nyanko)
Sailor Moon S (U-Chouten)
Shadow Skill (Kyuo)
Slayers (Kira)
Smile PreCure! (Candy)
Super Doll Licca-chan (Katrina)
ToHeart (Rio Hinayama)
Tokyo Underground (Ciel Messiah)
The Vision of Escaflowne (Merle)
YuYu Hakusho (Masaru, Natsumiko, Fubuki, Shura)

I know her !