Masun

Masun is dressed like a despot and can be found preaching to the village in Altair's first assignment: to bring the traitor back, who helped open the gates to Masyaf so the Templars could enter. When listened to the first time through the game, he seems a bit of a madman. Masun openly admits that he works for the Templars in his confession to Altair and tells him that he should work for them too. If you listen to what Masun is saying a second time through (after completing the game) his words take on another dimension. He is repeating the Templars' "new world where all men are equal" promises, and labels Al Mualim as a madman because he opposes this idea.

Masun and another assassin named Jamal were the traitors who let the Templars in to Masyaf with the help of the Basket-Weaver in the village. The Basket-Weaver delivered letters back and forth between Jamal and Masun - one of which Altair pick-pockets in "The Traitor" memory. Al Mualim kills Masun, who is unrepentant. Afterward, Al Mualim says he will speak with Jamal and decide if he is simply misguided and can be saved, or if his will has been corrupted by the Templars and their propaganda. We never see Jamal, who was the "inside man".