I voted for Maria because in NitM, which was only released in Japan and is a remake of SotN with two extra areas in each castle, she is so incredibly powerful. She can hold up to 999 hearts, has a magic meter to cast spells, can shoot fireballs that can be charged up like megaman, has a triple jump, and can do a flying kick. The spells she can cast in that game include: a barrage of fire, a healing spell, an invinciblity spell, summon a dragon (her crush from other games), and an attack that resembles kakashi's lightning blade from Naruto. She can also use the same sub-weapons as richter. You can probably check this out on youtube.