Ectoplasm

Ectoplasm is, in the words of Professor Filius Flitwick, "an unpleasant greenish substance left behind by certain ghostly beings". This substance can be clean with a simple Ectoplasm-Cleaning Charm, learned in Second-year Charms. The Ectoplasm-Producing Charm is known to produce a sticky imitation of this substance.

Appearances

 * Harry Potter and the Chamber of Secrets (video game)
 * Harry Potter and the Prisoner of Azkaban (video game)