
Quick answer — Hiromi Hirata voices Maggie Mui in R.O.D -THE TV-, Makoto Kikuchi in The Idol Master, Kouta Iijima in My Roommate is a Cat and 5 more characters.
Hiromi Hirata voices Maggie Mui (R.O.D -THE TV-), Makoto Kikuchi (The Idol Master), Kouta Iijima (My Roommate is a Cat), Minato no Haha (Kusunoki's Garden of Gods), Aki Kitsutaka (Asura Cryin' 2), Alme Noten (The Book of Bantorra), Maki Itokazu (Cat Planet Cuties), Miyabi (SENRAN KAGURA SHINOVI MASTER).
Maggie Mui is voiced in Japanese by Hiromi Hirata.