Admiral Motti was a young, ambitious Imperial officer who extolled the Death Star as the ultimate power in the universe, and burned to use the battle station against the Rebellion and any who dared to challenge Imperial power. An ally of Grand Moff Tarkin's, Motti loved technology above all else, particularly when it was used to create devastating superweapons. He died when the Death Star was destroyed.
Motti supported Tarkin's belief that fear of the Death Star would keep restive star systems obedient to the Empire, and openly campaigned for the Grand Moff to use the battle station's destructive power.
Motti saw Darth Vader as a relic of the decadent Republic, his sorcerer's ways an embarrassment in an era in which power came from Imperial scientists' mastery of technology.
With its systems finally operational, Motti argued that the Death Star was invincible, making the Rebellion a nuisance and the mighty Imperial Starfleet obsolete.