In Assassin's Creed II, which Renaissance inventor designs Ezio's first flying machine?

In Assassin's Creed II, Leonardo da Vinci designs Ezio's first flying machine.

Leonardo is one of Ezio's most important allies in Assassin's Creed II. After moving from Florence, he helps decode pages of Altaïr's Codex and develops equipment based on their designs. His workshop provides Ezio with upgrades such as the hidden blade and poison blade, while Leonardo's curiosity and engineering skill make him a natural partner for an Assassin using experimental technology.

The flying machine appears in the Venice sequence. Leonardo adapts the concept of a glider associated with his studies of flight and adds a practical heat source so Ezio can cross the city from the air. The sequence is fictionalized for gameplay, but it draws on Leonardo's real notebooks and interest in human flight.

Leonardo is not the same historical figure as Machiavelli, who becomes an Assassin ally and mentor to Ezio, or Michelangelo, who is associated with Renaissance art. Galileo belongs to a later generation and does not design Ezio's machine.