
Quick answer — Miyako Itou voices Freeze in Go! Princess Precure, Suyong Hong in Hikaru no Go, Hippo in Mermaid Melody: Pichi Pichi Pitch and 2 more characters.
Miyako Itou voices Freeze (Go! Princess Precure), Suyong Hong (Hikaru no Go), Hippo (Mermaid Melody: Pichi Pichi Pitch), Kree (Deltora Quest), Eipam (Pokémon Ranger and the Temple of the Sea).
Freeze is voiced in Japanese by Miyako Itou.