Donatello or Don/Donnie is one of the four main protagonists in the 2012 version of Teenage Mutant Ninja Turtles and a member of the TMNT. He is the tallest turtle and best friend of April O'Neil, younger adoptive brother of Karai, younger brother to Leonardo and Raphael, and the older brother of Michelangelo. He is "The Brains" of the team.