Captain J

The second-in-command of Kumogakure, she's one of the most famous ninja in the world under her title of 'Raiojo' (Lightning Princess), known for being an active combatant with the fighting potential on the level of a Kage. It is said she is a bolt of lightning, tamed by the Raikage given human form, even in her youth a legend known even to civilians, though more astute and knowledgeable would know she is descended of a previous line of Raikage and (as far as you know) probably a mortal.

Knowledge of her combat ability is likely exaggerated due to her extreme reputation that overshadows even the Raikage, but it can be assumed there's some truth to her skill if she holds the Captain title in her village. She can summon lthunderstorms, vanish from the eyes of the sharpest ninja using her sheer speed, punch through mountains and chokeslam tailed beasts, or so they say.