B-Gaudian is the boss of Zone B in Super Darius II. It is shaped after a garden eel.
Throughout the fight, B-Gaudian will flail it's elongated body, stopping every now and then to shoot a fireball at the player, which will detonate if it hits the ground. After a while it will shoot it's head, revealing a smaller head inside. Once the head comes back, it will breath a flame at the player and sink into the ground, appearing on the opposite side of the screen and resuming it's attack pattern. After the external head is destroyed, the small one will shoot straight bullets.