Fraaz

Fraaz is a boss from The Legend of Zelda: Spirit Tracks. It is depicted as a mouse-like creature who has absolute control over ice and fire. To defeat it, Link must throw his boomerang at the opposite element that Fraaz is currently wielding, and make it hit the boss in the process.

Etymology
Fraaz is likely named after Blaaz, a boss from The Legend of Zelda: Phantom Hourglass. Where Blaaz is derived from "blaze", Fraaz is likely derived from "freeze".