The Imaskari were an ancient human ethnic group as well as an extremely powerful ancient human empire. The Imaskari were extremely powerful mages, rivaling the Netherese, who perfected instantaneous travel through portals that could span large distances as well as planar space itself. They used their magical power to dominate other humans and humanoid species, going so far as to capture and enslave humans from other planets, bringing them to Toril to serve. The Mulan are descendants of such slaves. The Imaskari Empire and the Imaskari people fell to great natural and magical cataclysms that caused their entire nation to be swallowed by The Ruarin Desert and The Planes of Purple dust, were some ruins can still be found.