
Quick answer — Kae Araki voices Chibiusa in Sailor Moon R, Hikari Yagami in Digimon: Digital Monsters, Minnie May in Gunsmith Cats and 11 more characters.
Kae Araki voices Chibiusa (Sailor Moon R), Hikari Yagami (Digimon: Digital Monsters), Minnie May (Gunsmith Cats), Miaka Yuuki (Fushigi Yugi: The Mysterious Play), Yoshiko Tanaka (The Legend of Black Heaven), Nagisa Nagase (GTO: Great Teacher Onizuka), Eeta (HUNTER×HUNTER: Greed Island), Mimi Yoshioka (Lovely Complex) and 6 more.
Chibiusa is voiced in Japanese by Kae Araki.