According to the HRP website, ‘skeletor’ is a ghostly figure that was caught on the palace’s CCTV cameras in 2003.
They explain: “On three consecutive days, palace security staff were called to close one particular fire door near the palace's Introductory Exhibition.
“On the first day, CCTV footage showed the doors flying wide open with great force but there was nothing to reveal why.
“On the second day, the same thing happened but this time a ghostly-looking figure in period dress suddenly appeared on the screen and closed the doors.”
They add: “The doors opened again on the third day but there was no further sign of the ghostly doorkeeper."
