Castlevania: Order of Ecclesia/Dracula's Castle

Boss: Wallman
Wallman attacks by throwing three bombs that explode in straight lines horizontally and vertically. He then uses the Paries glyph to go through the wall behind and bring back a super potion to drink. This pattern is repeated. Wallman cannot be killed through attacks. The trick to defeating him is to absorb his Paries glyph.