Ectoplasm

Ectoplasm is a substance left by the corpses of of men who have regrets. It is usually depicted as a colored blob with several human faces formed within it (similar to Dracula's second form in Castlevania III: Dracula's Curse). Touching it usually causes curses. It floats around the air slowly and can take several hits to destroy. Striking it once without killing it usually causes it to speed up momentarily.

It lacked the human faces in the first game that it appeared in, Super Castlevania IV (called Transparent Body in Japan). It rotated between many bright colors. When it is destroyed after many hits, it expands out into a horizontal bar and disappears.

In Castlevania: Curse of Darkness, Ectoplasm is found in the Garibaldi Temple and several other places. It drops Uncurse and if it touches you while it is pink you will be cursed. You can steal from it when it turns pink and moves towards you.