Here are people I think should be added:
I only wrote the most important roles.
Sakurai Takahiro......Cloud Strife from Final Fantasy 7, Kira Izuru from Bleach, Kururugi Suzaku from Code Geass, Kanda Yuu from D-Gray-Man, Sasori from Naruto, Neeba from Tower of Druaga, Oshino Meme from Bakemonogatari etc.
Hirano Aya.....Haruhi Suzumiya form Melanholy of Haruhi Suzumiya, Amane Misa from Death note, Izumi Konata from Lucky star, Heartfilia Lucy from Fairy Tail, Herself in Lucky Star etc.
Ono Daisuke.....Michaelis Sebastian from Kuroshitsuji, Ima Alibero from Mahou Sensei Negima, Bezarius Jack from Pandora Hearts, Koizumi Itsuki from Melanholy of Haruhi Suzumiya, Satsuki Kakeru from 11 eyes, Himself in Lucky Star etc.
Sugita Tomokazu.....Sakata Gintoki from Gintama, Kyon from Melanholy of Haruhi Suzumiya, Kensei from Bleach, Aizawa Yuuichi from Kanon, Isaki Shuuji from Shikabane Hime, Himself in Lucky Star etc.
Nakai Kazuya......Hijikata Toshiro from Gintama, Katsuragi from 07-Ghost, Kagakagari Takaya from Asura Crying, Miles from FMA: Brotherhood, Valentine Jan from Hellsing, Zaka from Valkyria Chronicles etc.
Koshimizu Ami (she can speak old Japanese).......Horo from Spice and Wolf, Jahana Mao from Blood+, Laite Chanter from Chrome Shelled Regios, Stadtfeld Karen from Code Geass, Anemone from Eureka Seven, Link Aria from Letter Bee, Noihara Himari from Omamori Himari etc.
Miki Shinichiro......Urahara Kisuke from Bleach, Assassin from Fate/Stay night, Mustang Roy from FMA: Bortherhood, Sakamoto Tatsuma from Gintama, Stratos Lockon from Mobile Suit Gundam 00 etc.
Hayami Show......Aizen Souske from Bleach, Ayanami from 07-Ghost, Umibozu from Gintama, Maxwell Enrico from Hellsing etc.