Thordur is a dwarf who, back in the days of RuneScape Classic, ran an attraction known as the Black Hole Experience, a mock version of the Black Hole where rulebreakers used to be sent. He was found in the Dwarven Mines near the current location of Boot the Dwarf, and teleported players into the attraction and gave players disk of returning to leave.
However, some players tricked other players into dropping their disks, trapping them in the hole until Jagex rescued them. He was removed alongside his attraction and the Black Hole itself due to how often it was used for scamming.
He makes a small appearance in Gower Quest. His black hole is accessed by spinning the disk of returning given by Andrew in the Dwarven Mines, near where he was originally found. Once the black hole is navigated, players will find Thordur sitting at his desk in a white hole, guarding the entrance to "Behind the Scenes".
- The name Thordur is of Icelandic origin.