Which inventor helps Ezio use a flying machine in Assassin's Creed II?

Leonardo da Vinci helps Ezio use a flying machine in Assassin's Creed II.

In the game's Renaissance Italy storyline, Leonardo is portrayed as an inventive ally of Ezio Auditore. He deciphers pages from the Codex, creates and improves equipment, and assists Ezio with technological solutions during the campaign.

One of Leonardo's designs is a glider based on his studies of flight. Ezio uses a modified version during a mission over Venice, where burning material provides the lift needed to cross the city and reach his objective. The sequence is inspired by Leonardo's real fascination with aviation and his sketches of flying machines.

The historical Leonardo was a painter, engineer, scientist, and prolific observer of nature. Assassin's Creed II blends his documented interests with fictional interactions and inventions, so the game should not be read as a literal account of every device he built or every person he met.