Malik Al-Sayf

Malik is the leader of the Jerusalem Assassin's Bureau. One of the first assassins you meet in Solomon's Temple, he is a harsh, yet wise assassin who envies Altaïr due to his skill and rank in the guild. At first, his devotion to the Creed and Al Mualim is unbreakable and undeniable, yet he slowly gains a respect for Altaïr as he changes on his quest to redeem himself.

Solomon's Temple

Along with his brother and Altaïr, the three were charged with capturing the Templar's Treasure, later found to be the Piece of Eden by Al Mualim. He forewarns Altaïr of his blatant disregard of the Creed. Eventually, Altaïr's stubbornness, headstrong attitude, and arrogance leads to the tragic failure of the mission, costing Malik his arm and his brother's life.

Jerusalem: 1st Visit

When first meeting up with Altaïr in Jerusalem, Malik makes no effort to disguise his newfound hatred of Altaïr. Pointing out even the most subtle of flaws and the small haughtiness of his attitude whenever possible, the two have an unpleasant meeting when discussing the assassination of Talal. Even though the assassination was a success, he criticizes Altaïr for triggering the City Alarm and alerting the citizens of Jerusalem to Talal's demise.

Jerusalem: 2nd Visit

Though his cold attitude toward Altaïr has gone through little to no changes, he expresses a tiny tinge of impressment when seeing Altaïr asking for advice and taking a better respect for the Creed. After the assassination, he notes that Altaïr had performed just as an assassin should. No more, no less.

Jerusalem: 3rd Visit

When Altaïr visits Malik for the final time in Jerusalem, the easily angered and quick to criticize Malik had changed, speaking to Altaïr as an assassin rather than the failure that had caused the tragedy in Solomon's Temple. After the skirmish at the funeral of Majd Addin, Malik and Altaïr have a quick, heated argument on rather to chase Robert de Sable to Arsuf or return to Masyaf to seek the wisdom of Al Mualim. Altaïr argues that he uses the Creed as a shield, not seeing the entire truth but rather what Al Mualim wants him to see. Altaïr suggests that he learns more of the Piece of Eden from the people of Jerusalem and Al Mualim while he hunts down Robert. Before their departure, Altaïr apologizes for his failure at Solomon's Temple, which Malik refuses since the Altaïr that stood before him today was not the same one that had sparked the failure of Solomon's Temple.

Masyaf

Malik makes his final appearance at Masyaf, aiding Altaïr in fending off the hypnotized assassins with loyal assassins still unaffected by the Piece of Eden. He then leads an assault at the back of the fortress, going on advice given from Altaïr as he personally deals with Al Mualim. His final appearance before the end of the Memory Block was at the revealing of the other locations of the Piece of Eden, where he catches up to Altaïr.

What currently happened afterward to both Altaïr and Malik is unknown.