The Mercenary Captain is the leader of all of the Mercenaries in the Desert Mining Camp, and was hired to guard the entrance of it to prevent people from going in and discovering the slave-trade that was going on there. The Mercenary Captain plays a role in the quest The Tourist Trap, in which he is portrayed as a hot-headed and angry individual, and must be provoked to the point of outrage so that he initiates combat with the player himself, rather than having his mercenaries do his dirty work for him, upon which he is killed and drops a Metal key which can open the gate to the Mining Camp.
The Captain claims he is hunting someone called Al Zaba Bhasim and may task the player to kill him. Al Bhasim is an anagram of the name Al Shabim, the leader of the Bedabin Nomads. The task cannot be done as Al Shabim cannot be fought.