Who is Leonardo da vinci's coworker?

Leonardo da vinci had several contemporaries and collaborators, but one of his notable coworkers was Francesco Melzi, who was one of his most devoted students. Melzi assisted da Vinci in various projects and became his principal heir, preserving and continuing his work after da Vinci's death. Additionally, in the broader context of the Renaissance, artists like Michelangelo and Raphael were also significant figures who interacted with da Vinci's work, though they were not direct coworkers.