A group of hackers from the anime series Serial Experiments Lain. They are a loosely affiliated group who are worshiping the psudo-god Masami Eri. They basically do his bidding.
They are trying to capture Lain, and use her superior powers for their own benefit. It appears that their goal is to control the information that is available on the Wired World.
They may be related to Knight of the Roundtable, or the Knights Templar.
The Knights of the Eastern Calculus.