The Obelisk is a mobile superweapon constructed by the Twik-Twikh, the strange design is seen as alien compared to their other weapons and vehicles. For some reason the construct was not made by the Rhevolan Manufactering Corporation but by the Twikhyam Coallotion itself. The weapon is in fact a mobile ground to air/space cannon, however, it can be used as artillery or a heavy assualt weapon
The Obelisk has a long obelisk like gun covered by a sizeable protective layer of Nanodiamond. All of this can be moved by 6 legs wich are covered with nanodiamond. Guns and cannons cover much of the whole and the command center is located at the back of the body where the core of the gun is located.