The Insect Trapper is a giant plant monster and one of Janna's lieutenants. He was the keeper of a piece of Stone Tablet which served as a key to Janna's realm. The monster resided inside Arthur's castle, effectively transforming the entire building into a garden. When Ghostbusters defeated it there, the plant demon returned to Janna's realm, where he later was captured.
- Insect Trapper is perhaps the only ghost in all Ghostbusters media shown killing a human (Arthur) onscreen.
- Insect Trapper is a bit similar to Extreme Ghostbusters character Shanbahac, who is a civilization-destroying demon who possesses plants.
- It also bears more than a little resemblance to Audrey II, the villain from the musical "Little Shop of Horrors". Which coincidentally enough, starred Ghostbusters own Rick Moranis in the 1986 film version as the unlikely hero Seymour Krelborn and featured Bill Murray as Arthur Denton, one of the patients of the sadistic dentist Orin Scrivello.
- On page six of Ghostbusters Issue #6 and page 13 of Ghostbusters Issue #7, several Insect Trappers can be seen around Fantastic Land.