
Quick answer — Kazusa Murai voices Ribon-chan in Hamtaro, Kazumi Takiura in The Devil Lady, Lylie Kisha in Cowboy Bebop: The Movie - Knockin' on Heaven's Door and 13 more characters.
Kazusa Murai voices Ribon-chan (Hamtaro), Kazumi Takiura (The Devil Lady), Lylie Kisha (Cowboy Bebop: The Movie - Knockin' on Heaven's Door), Nemu (Haibane Renmei), Dana (Full Metal Panic? Fumoffu), Grace Wiseman (Full Metal Panic!), Chiyoko Agemaki (Zakuro), Isola (Zegapain) and 8 more.
Ribon-chan is voiced in Japanese by Kazusa Murai.