Horizontal Grin Ghost is one of a number of ghosts that appear in the The Real Ghostbusters Pilot. He has also appeared in many promotional items including Milton Bradley The Real Ghostbusters board game on a card.
A medium sized creature with horizonzal mouth. He looks something like a bug and has lots of legs. However, the bottom half of him was barely see-able in the pilot. A toy that looks somewhat like him was released with the Ghost Sweeper vehicle called "Street Creeper ghost".
- On Cover RI of Ghostbusters Issue #15, the Horizontal Grin Ghost makes a non-canon cameo.
- On Page 7 of Ghostbusters Annual 2017, in panel 4, the ghost makes a non-canon cameo.