Shibano is the ghost of a noble warrior associated with the founding of a version of the Foot Clan in a parallel dimension.
Teenage Mutant Ninja Turtles
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Winston Zeddemore and Leonardo crossed over into another dimension and ended up a refurbished section of sewers that resembled the Turtles' Lair. The open portal stirred up P.K.E. and attracted a ghost to their location. Winston atomized it with his Proton Pistol and explained it was a temporary measure in place of dragging along Traps on their trip.
- Teenage Mutant Ninja Turtles/Ghostbusters Volume 2