I think it's pretty obvious it's Itachi.
-Given "solo king" title by his fans even though he's won all his big fights with help
-Only dead guy to be said to be able to defeat the Sage
-Only character who is no longer apart of the plot but still manages to average a pretty high thread count (due to the constant "Itachi solos" threads)
-His NB fans made a church in his honor
Don't get me wrong I've said it before and I'll say it again, he's the most impressive character in Naruto. It takes a lot to overrate someone who has as much going for him as Itachi does, which I guess is why his wanking is so far out there compared to other characters. I guess one could flip this and say that even when it comes to wank, Itachi still manages to be the best