Specter
From Jenny Everywhere Wiki
Specters were a type of spirit.
Nature
In the Prime Universe, they were a type of spirit distinct from ghosts or wraiths. (PROSE: The Ghosts and the Machine)
History
On Halloween 2019, the Crew of the Copper-Colored Cupids and Madame Tarsa faced and ultimately defeated the Great Ghost's legion, which had escaped from the Spirit Realm and included specters among many other kinds of spirits. (PROSE: The Ghosts and the Machine)