I don't have only one favourite character. My favourite characters are Sasuke, Kakashi, Itachi & Anko.
For me the sexiest characters are Sasuke & Kakashi.
I think the strongest character is probably Madara (or Obito). Sure, Naruto is also strong, but only because of Kurama. Without the Kyuubi he wouldn't be half as strong as he is now. That's what I think. And maybe Sasuke counts to the strongest characters too because he lost everything, took the wrong way, but in the end he stands on his own feet and accepts his mistakes and.. Yea.. I think he is the mentally strongest character and so is Naruto.
As boyfriend I would like to have Sasuke or Kakashi. Maybe Itachi or Kiba..
I hope it's clear what I meant, I'm Austrian, my English isn't that good, sorry. ^-^
Greets ♡