In Assassin's Creed II, which artist helps Ezio Auditore upgrade his equipment?

In Assassin's Creed II, Leonardo da Vinci helps Ezio Auditore upgrade his equipment. The historical artist, inventor, and engineer becomes one of Ezio's most important allies during the Renaissance adventure.

Leonardo examines designs connected with the Assassin order and builds or improves devices for Ezio. His workshop assistance includes the hidden blade and other tools, while the game also gives him a role in creating the flying machine used during a mission in Venice. These inventions combine historical inspiration with fictional Assassin technology.

The game takes creative liberties with Leonardo's life and relationships, but his presence is grounded in his real connection to fifteenth-century Italy. Leonardo was born in 1452 and became famous for works including The Last Supper and the Mona Lisa. Assassin's Creed II places him within Ezio's fictional conspiracy while preserving his reputation as an unusually versatile Renaissance thinker.