The Giant Skeleton is the first boss in Aria of Sorrow Remade. He is called Creaking Skull in the actual Aria of Sorrow. He has no legs.
The Giant Skeleton will drag himself around the room, trying to grab the player. He can also shoot fireballs, and slam his leg bone down. His weak spot is the orb in his chest. He has 1000 HP, and his theme is Followers of Darkness -The Second-.