Charismatic and intelligent, Mouli was a natural leader. All of his followers were fanatics.
Mouli had striking blonde hair and blue eyes.
Mouli was a foreigner to the sands of Zakhara, hence his surname of "al-Ajami." Over time he convinced a large number of smaller tribes and clans to rebel against the Grand Caliph. He led many raids against caravans, outposts, and civilized lands.