In new anime Bartender, the bartender will be played by Mizushima Takahiro-san, best known for playing an additional voice in episode six of Weiss Kreuz Gluhen. He also appeared in a series called Gakuen Heaven as Ozawa Wataru. The role of Kurushima Miwa will be played by Fujimura Ayumi-san.
A fuller cast for Code Geass has been released. In the fine tradition of mecha shows, there's no way I can predict how the katakana will romanise, so I'll just list the seiyuu in order. Fukuyama Jun-san, Sakurai Takahiro-san, Yukana-san, Koshimizu Ami-san, Nazuka Kaori-san, Oohara Sayaka-san, Sugiyama Noriaki-san, Chiba Saeko-san and Arai Satomi-san.