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Leonardo - named in honor of the great artist of the Renaissance - Leonardo da Vinci. He is the most senior among his brothers and most prudent. Leonardo has a commanding personality and is currently the leader of the Teenage Mutant Ninja Turtles team because someone's got to be unless Splinter is present, and one of the four main characters in the franchise. In addition, he is the only one who is interested in a little order and discipline. Leonardo is very serious about about his ninjutsu studies and tries to explain to his brothers, that this is not a game. Unfortunately, they rarely listen to him and find him boring. He is often characterized by his blue headband and Katana swords. Leonardo has a strong bond with his father and mentor Splinter.