This boss is pretty harder than the last one so make sure you leveled-up. Place Mag at the front and Linear at the back. Have her heal (you should have the skill to heal everybody at once at this point) while Mag attacks.
It has about 1500HP, drops Santa Maria.
Moves: Tentacle,
Paralysis pollen [May cause paralysis],
Remove potion [May cause blindness],
Recovery [Enemy recovers 125 HP],
Suck In.
