Place: Ancient Egypt
A person’s spirit double created at their birth that they joined upon death. Depicted in art as upraised arms, the Ka inhabits the mummified corpse, or in its destruction statues in the tomb. Living individuals leave provisions for the Ka and if the offerings were insufficient, the Ka would be forced to wander as a ghost eating and drinking whatever it could find.
Wooden Ka statue of Awybre Hor
The personality and unique soul of a person. Depicted as a falcon with the head of a human, the Ba is an after-death consciousness state that rises to look over the body. It moves between the world of the living and the realm of the dead, returning to the tomb with the setting of the sun.
While the Ka and the Ba are not traditional ghost myths, their connection to the living body and subsequent after-death state mark them as interesting after-death consciousness studies—and thus inclusive in this archive. Plus I have a serious fondness for Ancient Egyptian mythology.