From Guild Wars Wiki
Khan-Ur is the title used by the supreme rulers of the
Charr. The first Khan-Ur unified the Charr before the arrival of
humans on the
Tyrian continent, and the last Khan-Ur was assassinated around the time of the
Exodus of the Gods. The four heirs of the last Khan-Ur formed the four
High Legions. Although some Charr have subsequently claimed the title, none have been able to hold it for more than a few years.
