Phaia is a Sub-Boss in Hall of Malice that looks like a woman riding a boar. The fight starts out with her riding the boar on the right side of the screen. After a certain amount of damage the boar and she will fly to opposite sides. One is invulnerable during this time. Watch for the orb that passes between them when they switch. It is easy to get chain attacked by this sub-boss being knocked around by her green circling attack and her switching places with her boar.