Which historical Italian artist appears as an ally to Ezio in Assassin's Creed II?

Leonardo da Vinci appears as an ally to Ezio in Assassin's Creed II.

In the game, Leonardo is portrayed as a gifted inventor and artist who helps Ezio understand and use equipment connected to the Assassin Brotherhood. He deciphers the pages of Altaïr's Codex, maintains Ezio's weapons, and creates devices inspired by Renaissance technology. Their friendship gives the game's historical setting a recurring human connection.

The real Leonardo da Vinci lived from 1452 to 1519 and was active in Florence, Milan, and elsewhere in Italy. Assassin's Creed II uses genuine elements of his biography and inventions, but the partnership with Ezio is fictional. The game also includes other historical figures, including Lorenzo de' Medici, Caterina Sforza, and Rodrigo Borgia. Michelangelo, Raphael, and Donatello were also major Renaissance names, but none is Ezio's principal inventor ally in Assassin's Creed II.