Darth Malak , named Alek Squinquargesimus as a Jedi, nicknamed Squint, was Darth Revan's apprentice, and later the Dark Lord of the Sith. He followed Revan on the quest for the Star Forge, always envious of his master's control of the Dark side of the Force. When Revan's ship was attacked by Jedi Knights, including Bastila Shan, whose Battle Meditation was disrupting the Sith battle plans, Malak saw his opportunity to destroy all of his rivals in one blow.
The former apprentice fired on Revan's ship, badly damaging it. However, the Jedi escaped, secretly bringing with them the former Dark Lord Revan, whose mind had been damaged and his memory irreparably destroyed. Malak then assumed command of the Sith war fleet and took on an apprentice, Darth Bandon, and continued the campaign against the Republic.