Scaldera

Scaldera is the boss of the second dungeon in Skyward Sword, the Fire Temple. He is very similar in size and shape to a mini-boss from Spirit Tracks, a simple Rocktite.

When the battle begins, Scaldera will fire fireballs in different directions and Link will need to run up the slope while dodging the fireballs. Then eventually Scaldera will chase after Link. We know from previous Game Informer updates that to defeat Scaldera you must throw bombs into its mouth, which will slowly chip away at its exoskeleton. This will reveal an eye beneath, which must be attacked with the sword to defeat him.