Mordack

Mordack is the brother of the wizard, Manannan and the witch, Hagatha. He is the main antagonist in the fifth game of the series, and is believed to be a more powerful wizard than his brother, Manannan.

Background
Not much is known about Mordack past. He used to play chess with Shadrack, who considered him to be a "ninny at chess". Abdul Alhazred was his minion and also a good friend. Alhazred, was a vizier of the Land of the Green Isles, and brother of the Society of the Black Cloak. Through his relationship with Alhazred he was able to meet Cassima, princess of the Land of the Green Isles. He expressed his wishes to marry Cassima, though she refused. Enraged by ths, Mordack kidnapped Cassima with Alhazred's help and put her to work as a scullery girl on his island.

Sometime after, or possibly during these events, Mordack's brother, Manannan, was transformed into a cat by Prince Alexander of Daventry. In retaliation for this, Mordack cast a magic spell on Castle Daventry. The spell miniturized the castle, and imprisoned it and its inhabitants inside a glass bottle. The bottle was kept inside his laboratory in his castle. Mordack was killed shortly thereafter in a magical battle with King Graham of Daventry, when Mordack transformed into fire, and Graham summoned a rain cloud. Within the a year of having taken Casima, he was slain, and she returned the the Green Isles.

Behind the scenes
In the official King's Quest Collection trivia program, King's Questions and the King's Quest Companion, Hagatha is said to be his sister. Though this fact is not brought up in any of the manuals or the official adventure games themselves. Also, Roberta Williams stated in an interview that "Hagatha was her own separate person". The connection was therefore probably made only by other official designers, authors, or producers that have contributed to the King's Quest universe and lore.

He is widely considered the most powerful villain in the official King's Quest series.

Mordack (unofficial)
Mordack appears in fan fiction, including fan games, see Mordack (unofficial).