Neji, Lee, Gaara, Naruto, Kakashi, and Sasuke. Those were all good times, they're all my favorite. Now All of these characters are ruined in Shippuden except Gaara and Kakashi.
Naruto gets too much wanking with being praises and acknowledged that he pretty much gets redeemed since pain arc and getting load of powerups which he pretty much oneshot every edos with clones and alot of Talk No Jutsu which it dragged on to the point his character is so Bland.
Sasuke is such an emotional wrecked, he's arrogance with his superiority of his power, he gets free powerups, too much flip floppin, he's irrational being and now he's going to become a Hokage despite all the action he's done. The whole Uchicha concept is BS in this series.
Neji: He's neglected, got trolled along with the Hyuga clans, and got fodderized due to the whole Powerscale on some DBZ shit which is BullShit!!!
Lee: Same thing with Neji except that we never get to see him fight with Neji and to surpassed him.