These mysterious rifts are disturbances in the fabric of time and space. It is from here that extradimensional invaders of unknown origin, collectively known as "Voidwalkers", breach into Vana'diel. To stem the tide of invasion, adventurers may volunteer themselves in Voidwatch operations to dispatch these intruders at the source. The fiend Mimic King can be found at the Planar Rifts here.