Asteroid L is the sometime base of Lagneto, an asteroid held in Earth orbit by the power of lag. It has been destroyed and fallen into the ocean four or five times, but he won't let the idea go. The Brotherhood of Net.Villains was headquartered there when he led it.
The current version of Asteroid L contains a Metroidvania-esque deathtrap concourse and a cathedral-like throne room where Lagneto sits binge-watching TV shows on a laptop. It is guarded by a magically-enhanced semi-sapient security system.