Mass Effect/Characters

Saren Arterius is a fictional character within the series of Mass Effect who serves as the first game's main adversary.

Background
He is described in the game and books as a former turian Spectre, an elite group sworn to protect galactic peace, who was known for 'getting results'. More often than not this usually meant that he killed everyone within the scope of his current mission; including innocent bystanders, witnesses, and the target(s) in general. He built up a seething hatred for humans stemming from the loss of his brother in the First Contact War, between the turians and humans. After the events described in Mass Effect: Revelation, Saren subsequently takes command of an army of Geth turning them against his enemies.