Francis II and I (1768 – 1835) was the last Holy Roman Emperor as Francis II from 1792 to 1806, and the first Emperor of Austria as Francis I from 1804 to 1835. He was also King of Hungary, Croatia and Bohemia, and served as the first president of the German Confederation following its establishment in 1815.
Andrei meets the emperor in Book 1 Part 2 Chapter 12, and the emperor asks him some rather pointless questions about the war.