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Donatello (Don or Donnie) is a fictional character and one of the four main characters in the Teenage Mutant Ninja Turtles comics and all related media. He is co-creator Peter Laird's favorite Turtle.
In the Mirage/Image comics all four turtles wear red bandanas but in other versions he sports a purple bandana. His signature weapon is the bō staff. In all media he is depicted as the most knowledgeable of the four turtles, often speaking in technobabble with a natural aptitude for science and technology. He is named after the sculptor Donatello.
In the comics Donatello is originally presented along with Leonardo as one of the two calmer turtles and while the originals have no official command structure, in the early stories he is depicted as the second in command. In the first issue he is the one that killed the Shredder by knocking him and his grenade off the roof. The second issue elaborated more on each turtles personalities and opened with Donatello soldering a circuit. Later in the issue Donatello states that he is "familiar with some computer systems" and helps April O'Neil deactivate the Mousers. During the turtles' exile to Northampton, Donatello becomes obsessed with fixing...