Koya was Shredder's pet falcon, whom he used for reconnaissance. She was mutated sometime following City Fall and ambushed the Turtles and their friends at April's parents' farmhouse during the Northampton storyline. When she attempted to attack Elizabeth O'Neil, Michelangelo defeated her by smashing a motorcycle into her, and Leonardo drove her away by injuring her in a manner that would kill her if she did not seek medical attention.
