The Lantern Foreman is a 'monster drop' that was introduced during the Ratboy's Nightmare Update. It is one of the many collectibles that are needed by the players in order to complete the entries of the Itempedia of the Nightmare. The Lantern Foreman can only be obtained from the Nightmare Lanterns as a possible drop from the mob.
In appearance, the Lantern Foreman is a small living mechanical object that operates the Nightmare Lantern in its inner mechanisms. It possesses two small arms, a rather large nose that resembles similar to that of a pig nose, two metal eyes, and black horns coming out of its black cap.
Players may trade in the Lantern Foreman to the Gargoyle while making a deal with the NPC, which is collectively known as the Gargoyle's Deals. However, this can only be traded in if and only the deal is available throughout the servers, as one deal can only appear each real-life day.