Scylla

Scylla (also called Skula) is a monster in Greek Mythology who guards one side of a narrow strait opposite the monster Charybdis. Sailors would have a difficult time avoiding both of them. Scylla in most mythology is typically the naked upper torso of a woman, the lower torso of a fish, much similar to a mermaid, and dog heads attached to her waist.

Scylla is fought in Symphony of the Night in the Underground Caverns as one of the area's two bosses (the other being Succubus). Her appearance here is similar to as it is in mythology, except the lower half of her body are deadly water snakes, known as Scylla Wyrm. They have to be destroyed first before she can even be hit, unless you use the Ricochet Rock or Axe Subweapon. When all three of them are destroyed, she will be vulnerable. She has an attack where she summons bubbles out of the water, and if you don't destroy them, they will act as projectiles to track you and hit you. Her other attack is that she lets loose a stream of water that arc downwards to hit you if you are the right distance away.

The key to dodging her attacks is to know when the dogs on her torso howl. When they do, that's when the attack initiates. You either need to move out of the way of the stream attack, or destroy all the bubbles, before they start howling, or you will most definetely get hit. Upon defeat, she drops a Life Max Up.

Scylla is not fought directly in Castlevania: Aria of Sorrow, but her soul (called Skula), can be found in a Soul-Keeper in the Clock Tower. It grants Soma Cruz Deep Seeker, the ability to walk along the bottom of water.