My list would have to go
Tobirama Senju- He's a genius, the soul reason they were able to blitz ten tail obito so much, He evented pretty much everything. Plus hes just soo cool looking and ontop of that I'm pretty sure he could make a bigger water dome then even kisame can.
Nagato Uzumaki- The fact he has the rinnegan and use it soo well made me really like him like when he beat kcm 1 naruto and killer bee, He controlled the pains and kill alot of people
Madara Uchiha- Well enough said he was just a kind man tricked by a evil person, plus his amazing strength skill and experience awesome, his character design plus voice acting (dub or sub) is top tier, plus he had enough power to kill 8th gate guy when not even at full power but sadly minato saved guy from the truth seeking orbs.
Deidara- He's humor was amazing, he's death was kinda plot well I mean everyone sasuke fight and beats is just 100% plot, hes design is epic, his love for art being explosive is great plus he seen sasori as his sensei I mean hes not as strong as sasori was but still awesome character.
Orochimaru- He's goofy, hes *ual, hes intelligent, he helped in the great ninja war alot making karin heal tsunade, edo tensing the 4 hokage, giving sasuke the curse mark for he can be somewhat useful against obito (of course that was way earlier but still help in the long run), a master mind and plus hes voice is duh best.