Donatello, often referred to as 'Donnie', is one of the four Teenage Mutant Ninja Turtles, a group of anthropomorphic turtles who fight crime and protect their city from various villains. Known for his intelligence and technical prowess, Donatello is the team's inventor and engineer, often creating gadgets and machines that aid the turtles in their missions. He is easily recognized by his purple mask and his weapon of choice, the bo staff. Donatello's analytical mind and calm demeanor make him an invaluable member of the team, balancing out the more impulsive nature of his brothers.