Weapon Master of House Do'Urden
Zaknafein Do'Urden (pronounced zack-NAY-fee-in), famed Weapon Master of House Daermon N'a'shezbaernon, was Drizzt's father, his mentor and his dearest friend. It was he who gave Drizzt the courage to leave Menzoberranzan. He not only trained Drizzt to become an excellent warrior, he also played a great part in shaping his personality, protecting Drizzt from the brutality of Menzoberranzan for as long as he could.
Zaknafein Do'Urden was an excellent warrior, considered the finest in Menzoberranzan, but most importantly, he attempted to refute the evil of drow elves. He saw the cruelty of the drow, but could do little to stop it, apart from mercy killings. He did his best to live by his principles, in a world where greed overcomes compassion and ambition overrules all.
He had a mysterious friendship with Jarlaxle, leader of Bregan D'aerthe, but it is revealed in Road of the Patriarch that he was in some way betrayed by Jarlaxle. Zaknafein was sacrificed to Lolth by Matron Malice when House Do'Urden fell out of Lolth's favor. Upon discovering this, Drizzt left Menzoberranzan for the wilds of the Underdark.
Zaknafein was heavily involved in his son's martial training. He taught Drizzt to think creatively in a fighting situation and trained his muscles to respond to such thoughts. He insisted that improvisation was the mark of a good warrior. It is through Zaknafein's tutelage that Drizzt developed the dual-wielding fighting style common among the drow, and that allowed Drizzt to become known as one of the greatest swordsmen in Faerun.
Zaknafein was later brought back through Zin-carla to hunt Drizzt in the Underdark. The spirit-wraith found Drizzt and fought him in a cavern where there were walkways over a pit of acid. Ultimately, Zaknafein fights through the mental barriers, and hurls himself into the pit of acid to prevent himself from killing Drizzt.
Drizzt Clings to Hope
Years later, Drizzt learns that someone he thought lost became a prisoner of the demon Errtu. Assuming that it was his father Zaknafein, he set out to rescue him. It was later revealed that Wulfgar was the demon's prisoner, and that Zaknafein was indeed dead. However, the priest Cadderly Bonaduce summoned Zaknafein's spirit and dispatched it to Drizzt. The spirit of Zaknafein Do'Urden told Drizzt what had happened to him, and expressed pride and love he felt for Drizzt before vanishing.