Kitty Katswell

From the Nickelodeon show T.U.F.F. Puppy, Kitty Katswell is the highly skilled, serious, and capable female secret agent protagonist, serving as the competent partner to the dim-witted Dudley Puppy at the Turbo Undercover Fighting Force (T.U.F.F.). She's a master of martial arts, stealth, and weaponry, often exasperated by her canine partner but fiercely loyal, protecting the city of Petropolis from various villains like The Chameleon, Bird Brain and even the villains from D.O.O.M.