>>44172832I love my boy Mothman so much. I fused up a super jacked one in IV and beat Masakado Shadow with him attacking and Flynn and the other two demons just buffing and debuffing.
Great Dragon is also pretty based. You can only find them just before the final boss, but having one completely trivializes the fight. They get their best possible weapon in the dungeon leading up to the final boss, and the only thing that can do more than scratch damage to them is if the final boss does a standard attack. They even have full immunity to both flavors of breath attacks, which are usually very deadly.