Vitreous

The boss of Misery Mire and captor of the sixth Maiden, Vitreous (ゲルドーガ, Gerudōga) is a large eyeball surrounded by smaller eyeballs, immersed in a green liquid. The main eyeball will shoot lightning at Link, similar to Agahnim, while the smaller eyeballs attempt to swarm him. To avoid this, stand in one of the corners of the room and use the spin attack. Once the smaller eyeballs have been taken out, the main eyeball will attempt to charge at Link. The large eyeball can be defeated with sword strikes, but takes more damage from arrows. Defeating Vitreous earns Link a heart container and the sixth imprisoned Maiden.