Who is the weakest character to successfully defeat a composite PoT character who possesses ALL of the abilities shown in Prince of Tennis?
Some abilities...
Services so fast that the ball disappears
A technique that blinds and deafens the opponent
A technique that guarantees that the ball will return to you in a stationary position
Moving so fast that you create a clone of yourself that you can physically hug
And so on.
Seriously, there are too many abilities to list.