Ivan the Terrible

Ivan IV was born in 1530 and was the first leader of Russia to take the title Tsar. Despite Ivan's sometimes bloodthirsty acts the "Terrible" in his name is not reflective of meanness or evil, but conveyed that he was "formidable." Indeed he was! He was outrageously wealthy and created laws that virtually enslaved the peasant class in Russia. He was known for acts of cruelty, including the slaughter of up to 40,000 non-military inhabitants of Novgorod and the accidental killing of his own son during an argument. Because of the outrageousness of these acts some of Ivan's accomplishments are overlooked. During his early reign he was known as a reforming leader who created a standing army and revised the law code. It was only after the death of his wife that Ivan became progressively less balanced and more ruthless. In Age of Empires III: Definitive Edition Ivan is in his later years. You can expect him to be sinister, taunting and threatening. Ivan loves large armies even at the expense of technological advancement. He is especially fond of infantry units.

From the game's History encyclopedia, AoE3: DE 100.19.18309.