Battle Axe (バトルアックス), also known as Dal Yar (ダル・ヤー), is the third boss from Raiden II.
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Battle Axe is a naval battleship, equipped with lots of guns over it's body which can be destroyed. The Red Crystal is protected by a green glass dome, which when destroyed will also reveal a three-barreled cannon. The boss will also be helped by small turrets on the platforms to the sides.