Castlevania: Circle of the Moon
This enemy appears as a normal candle until struck (although it may be differently colored than the candles around it). They usually appear in pairs. When struck by a weapon, they transform into a frail-looking humanoid creature and fall to the floor, where they will melt into the floor in a very short time.
They are found in the Cerberus boss room, and may drop the Pluto DSS card.