A khal is a Dothraki warlord, commanding a khalasar or tribe of tens of thousands of warriors and non-combatants. To become khal, a Dothraki warrior must perform tremendous feats of bravery, daring and martial valor, as well as being ruthless and canny enough to avoid the machinations of his enemies and rivals. Drogo is an exceptional Dothraki khal for commanding such a large khalasar at a young age. [https://gameofthrones.fandom.com/wiki/Khal]