Prototype (Ar tonelico: Melody of Elemia)

The strongest in the floating robot sub-type monsters, and also, the strongest among the Robot-type enemies. This monster has very high stats, and while it lacks the stat boosting and healing skills of the Type III, it can attack all vanguards at once with its S-RAIN attack, and it also has a Lv. 3 Stored Attack: D-PIERCE. Because of this, you need to be on the lookout for whenever it tries using it to Guard your Reyvateil successfully, and try to either finish the battle quickly or using Blue Magic constantly in order to keep your party from getting too battered up from its attacks.