If Kakashi were a villain...
If Kakashi Hatake, the copy ninja, were to be a villain, he would have been one of the most wanted criminals on the globe. Just as his sharingan has saved him against countless villains, imagine what it would have done to the good guys if he combined it with with superior intellect and experience. If he had the "fight to kill" mindset instead of the "forget about revenge" mindset, he would easily manipulate those who stand against him as there are just few good guys that will stand a chance against him if he were to be killer hardcore. If it were a game, it would sound like
ROUND ONE, FIGHT!
He would take advantage of most of the good guys' weaknesses and use it to easily defeat them. Obviously, Kakashi can defeat ost of the good guys in the series :
-Sakura, Naruto (if Kakashi were a villain, Naruto wouldn't live to the stage he currently is), Sai, Yamato
-Shikamaru, Ino, Choji, Asuma
-Lee (i have to drop my fanboyism here ), Neji, Tenten, Guy
-Kiba, Shino, Hinata, Kurenai
- Inoichi, Shikaku, Choza, Ibiki, Kosuke
-Tsunade (she almost got killed by the nerdy version of Kabuto), Jiraiya (he cannot counter kamui), Kushina Uzumaki
-Konohamru, Udon, Moegi
-Shizune, Anko, Genma, Iruka, Aoba, Hayate, Ebisu, Zaji, Muta Aburame, Ensui, Kiba's sister and mum, Ramen guy and his daughter
-Temari, Kankuro, Gaara, Baki, Chiyo, Maki, Pakura
-Mei Terumi, Chojuro, Ao, Ganryu
-Killler B (cannot counter kamui even in hachibi form), Darui, Shee, Omoi, Karui, Samui, Atsui
-Kurotsuchi, Akatsuchi, Ittan
-Yugito Nii, Yagura, Roshi, Han, Utakata, Fu
Those are basically the good guys Kakashi would have killed if he were an evil villain.
He would be more of a:
and not a:
He would be UNSTOPPABLE!!!