Ul-Tash

Ul-Tash is a Suagir title meaning High King or Over-King. It was first claimed by Torkai Ul-Tash, and practically became a clan surname for him and his offspring. Upon his death and the division of his territories, the same title was given to his sons Kirdai, Tovaan, and Aotujai along with the domains that would be known as the Kirdan, Tovaanid, and Aotujan empires. 
However, the title is no longer in use today. Near the end of his life, Kirdai replaced it with the honorific Tash-Teshivan ("King of Kings"), which his heirs have used ever since. Aotujai's empire collapsed before he was even able to pass it down to a successor. The title of Ul-Tash was passed on to Norukai, son of Tovaan, but his own empire was defeated and overthrown soon after. Thus to this day, if someone speaks of the Ul-Tash, it is almost always implicit that they refer to Torkai the All-Conqueror himself.