The Melzar's Maze ghosts are low-level monsters found on the first floor of Melzar's Maze. Unlike normal level 36 ghosts, these ghosts can be talked to. When spoken to, they mention fires and a dragon. This suggests that these ghosts were once people living on Crandor, and were killed by Elvarg when she attacked the island.
Melzar the Mad moved them to his maze at the command of a lesser demon which had taken up residence in his basement. The reason for their relocation is not known, though Melzar's notes, found while searching bookcases in Melzar's Maze, suggest that Melzar was attempting necromancy with the ghosts. As his experimentation progressed, he became insane, and all further necromancy work was abandoned in favour of cabbage-based magic.
The only drop the ghosts have is an orange key used to progress further into the maze. While the drop is a 100% drop, it is only dropped by a specific ghost. It is the female ghost with a hood, but no cape, pictured above. It spawns in the south-east corner of the room. The other ghosts have no drops at all.