Hear ye, hear ye ! All those who have witnessed the sudden dissapearance of the two tower guards of Chalman mine, come forth and share your sight of the Two Wonderous Prestidigitators !

These two fellows are the most powerful and dangerous NPCs ever seen in the entire game, so beware when you venture in that forsaken place.

I bet they are also the most reported NPCs since launch.
However I will write a ticket for it if needed !

Sometimes, generally if you're the first person around, they will stand there, and make you believe that you can actually put up a fight against them. It is the Mender who generally lets you grow confident enough to get a bit closer... But then, hell is unleashed and he will just dissapear underground and never, EVER, stop firing away Unstable Cores at you and shoot strands of light out of the ground... without you ever being able to shoot back of course, since they dwell under the earth like crazed dwemers...

Maybe those two fellows were only around for the year, and they will move away to some forlorn place in 2015...