This is the giant boss reaverbot of the Lake Jyun Sub-Gate, placed to protect the red refractor.

Garudoriten sits quietly in a cylindar shaped body until it is alerted that its refractor, although it is painfully obvious that it will transform into a reaverbot of some form even beforehand. Once its metamorphosis is completed, it will be ready to attack. Its attack pattern is a dive-smash strike that throws all of its force into its opponent. Then, it will jump back into the center of its room. A large shockwave spreads across the floor when it lands.

For the chief guardian of a large red refractor, Garudoriten is surprisingly unsophisticated in its ability to battle.