Bio: Oystergs can carry some kind of pearl above their heads in their shells, but it takes some time to make a near pearl, and this pearl they have on their heads is used as a weapon to blast some kind of beam. Despite being part ice type, they can blast an icy energy beam to freeze predators.

Elemental: Water/Ice
Evolve form of: Harden clam monster (Clamden)
Height: 2'9 ft
Weight: 170 lbs.
Home habitats: Oceans, Beach, Caverns
Ability: Shell Armor, Overcoat