Naruto can t use the demon fox....
Interesting. I'd have to say Master Roshi. After all, Naruto has never had the power to destroy the moon.
Roshi is actually a really skilled fighter, who is clearly faster than sound. For a human to not be seen by a whole group of martial artists, and alot of 3-eyed people (who are supposed to be more powerful, and have super vision), he has to be very fast, also he was thinking, playing games, fighting in all under a second:
An eye blinks at 300 to 400 hundred milliseconds per blink
That means that about 5 minutes worth of fighting, playing, spitting and thinking was done, faster than 0.3 seconds. Not bad for an old man.
Master Roshi also destroyed the moon utterly, as there were no fragments left, no trace whatsoever. He then proceeded to carry on fighting goku
sleepy boy technique: http://www.youtube.com/watch?v=YN18ivCWRuo&feature=related
send Naruto to sleep.
lightning attack to fry naruto:
Master Roshi wins this