
Quick answer — Yoshiko Matsuo voices Louis Joseph in Lady Oscar: The Rose of Versailles, Akino Ametsuchi in ARIA The ANIMATION, Flyer in Galaxy Express 999 and 1 more characters.
Yoshiko Matsuo voices Louis Joseph (Lady Oscar: The Rose of Versailles), Akino Ametsuchi (ARIA The ANIMATION), Flyer (Galaxy Express 999), Fuu no Sobo (Tamayura).
Louis Joseph is voiced in Japanese by Yoshiko Matsuo.