Flyer is one of a number of ghosts that appear in the Subway at 21st Street in the Extreme Ghostbusters Intro. It has also appeared in episode "The Pied Piper of Manhattan" in the first scene and later at the open house at the Metropolitan Museum of Art. It appears in Heart of Darkness as both a Gateway ghost and a Spirit Slave. However, it was yellow-orange and not blue.
It appears to be flying bat like ghost with four eyes, however in other scenes he debatablely may have six or two little horns on the sides of his face. The ghost has a rather large mouth and a snake like tongue. It was shown to be a somewhat playful ghost.
- Extreme Ghostbusters
- Ecto Leeches, which sometimes confused with this ghost.
- Energy and Lightning Demons, which also have similar traits.
- Achira's children, which share flying traits as well.