Donatello

Donatello, also known as Donnie, is one of the two tritagonists (alongside Michelangelo) of the Paramount Teenage Mutant Ninja film franchise. He is one of the Ninja Turtles. As the smartest, brainy, and technological of his brothers, he is a mutant turtle that wears a purple bandanna and uses his bo staff as his signature weapon. As the brains of the Ninja Turtles, he provides his brothers with new weapons and vehicles, information on a location, person, or thing, and even a very good hacker. Donatello debuts in Teenage Mutant Ninja Turtles.