The Wrong Rock
From Jenny Everywhere Wiki
“The Wrong Rock” was a humourous contextual nickname for the asteroid in the Oort Cloud in which one universe's Lord Grallyx was imprisoned for centuries by “the Everywhere”. It was hollow, its walls reinforced with a variety of physical and magical protections; furthermore, it was surrounded by invisible antimatter mines and guarded by a swarm of robots. However, none of this prevented Sophie Everytime from gianing access to it to briefly interview Grallyx. (PROSE: How Jenny First Met…)