Donatello

 is a fictional mutant reptile superhero and one of the main characters featured in the Teenage Mutant Ninja Turtles multimedia franchise. The character was introduced in the first issue of the original Teenage Mutant Ninja Turtles ongoing comic book series by Mirage Studios. The character has appeared in every iteration of the "Ninja Turtles" franchise, including cartoon programs, live-action films, video games and more.

Overview
was once just a regular turtle along with his siblings, Leonardo, Raphael and Michelangelo. After being exposed to a strange green ooze called mutagen, he experienced accelerated growth, enhanced intellect and above-average physical characteristics. The brothers lived in the sewers beneath New York City where they were raised by a mutated rat named Splinter. Splinter possessed keen knowledge of the art of ninjitsu and taught it to all of the turtles, preparing them for the day when they might finally rise to the surface world to fight in the cause of justice. Donatello was the most intelligent and skilled of all of the turtles, favoring computer science over fighting, though he could hold his own in a battle just as competently as his brothers. Whenever a mission called for some tech-savvy computer work, Donnie was the man... uhh... err... turtle to call.