Maximilian I, Holy Roman Emperor

Maximilian I of the powerful Habsburg family (22 March 1459 - 12 January 1519) was the Holy Roman Emperor from 1493 until his death.

The Assassins (disguised as Condottieri) sent by Ezio brought him proof of Rodrigo Borgia using Swiss guards. He was defeated in the Swabian War by the Swiss so he was not pleased. The emperor then used the Swiss mercenaries, his best soldiers and the assassins to form his own mercenary force, the Landsknechts.

Source

 * Assassin's Creed: Project Legacy - Contracts