
Quick answer — Sakiko Uran voices Marumaro in Blue Dragon, Yukihana in Natsume's Book of Friends OVA, Remi Aono in Fresh Precure! and 6 more characters.
Sakiko Uran voices Marumaro (Blue Dragon), Yukihana (Natsume's Book of Friends OVA), Remi Aono (Fresh Precure!), Cinnamon Meilleure (Sugar Sugar Rune), Youko Tsukahara (You and Me.), Raphael (You're Being Summoned, Azazel), Poisonny (Precure), Setsuno (Toriko) and 1 more.
Marumaro is voiced in Japanese by Sakiko Uran.