Stag Beetle

Stag Beetles are mask-wearing monsters that appear throughout the Temple of Ice in Phantom Hourglass. They are very similar to Helmasaurs from other games in the fact that they can only be attacked from behind unless Link has an item, like the Grappling Hook, with which he can remove the mask revealing a small insect-like creature that flees away without the protection of their mask. With its mask gone, the Stag Beetle poses little threat to the young hero, and a single strike from his sword is usually enough to defeat it.