I'm voting for Power Personified: Uchiha Madara.
This is a tough one, since Bee, Madara, Deidara, and Hidan were all great in my eyes...I guess I'll have to go with Bee though. If you think about why people feel Sasuke isn't that great, it's because Bee handled that entire team. If we look at the Bee/A flashbacks, Bee comes off more impressive (and is noted to be more talented by A himself). He's responsible for Naruto getting to where he is now. He's fucking hilarious, and still quite powerful. He makes most scenes he's in better, and you can never count him out in a fight.
Bee. He is funny, powerfull and comes with a biju
Madara was nice but i had it with rinnegan spam. When Madara first apeared i belived we are going to see a insane MS/sharingan fight but NOOO rinnegan MUST be spammed.
Madara. Him standing over the shinobi and then massacre them was very epic and badass.
Tobi. A goofy, then enigmatic, then wtf moment im madara revelation, then powerful, then another wtf im not madara revelation character.
Bee - i like his life style... his badassery
Gonna nominate Pain. An awesome characters, which was the "center" of an hell of an arc
I'd say SASORI of the red sand
Nidaime Mizukage. Really interesting and hilarious.
killer bee =)
Can't believe I'm doing this..... but I nominate Sai.
People have forgotten about him lately, because it seems like Kishi has also forgotten about him, but he was just coming into his own as a character when this war blew up the character development. The whole non-comprehension of anything emotional or social was just a goldmine. It's a pity he got abandoned.
His rapping skillz pwn even the real life rapper.
Though, if it was team, I'd have voted for Deid-Tobi or Kaku-Hidan because they were so damn hilarious. xD