Odolwa: The boss of the first level, Woodfall Palace. Odolwa was inspired by ancient american cultures such as the aztec.
The goat boss: Boss of the Second palace. This is in the goron area.
Gyorg: Boss of the third palace which is the Zora area. This fish attacks you with pirhana type smaller fish.
Twin Moldu: Inhabiting the final palace, Twin Moldu very clearly resembles a previous monster from Link to the Past. Much like its counterpart, Moldu will dive under the sand with ease and come up to attack you beneath.