| This minifigure has only appeared in video game(s)|
Although this article is about an official minifigure, it never existed in physical form, or appeared in any official LEGO sets.
Martin Heiss was a well known debunker of all things supernatural. When a video surfaced of a video of a ghost, Martin said it was a fake on NY1 News. Later, Martin came to Ghostbusters headquarters, and demanded proof that there was infact a ghost in their trap. Abby was firmly against releasing the ghost from the trap, and Erin was for it. Ultimately, Erin released the ghost, which then took Martin through a window and he fell to the street below.