|Muggles' Guide to Harry Potter - Magic|
|Features||Moves an unconscious body|
|First Appearance||Harry Potter and the Prisoner of Azkaban|
Mobilicorpus is a spell that allows an unconscious (or perhaps dead) body to be moved.
Professor Lupin used this spell rather than waking Snape because it was simpler, perhaps, than having to deal with him bound up. This spell seems to be related to the Locomotor spell, which is used for inanimate objects, and the Levicorpus spell which appears to lift a conscious body up by the ankles.