Thanks to bfw182 for his awesome evaluation notes!
Kakashi Hatake (Copier of 1k Techniques)
Kakashi is currently one of the best characters in the game. He was very powerful before due to his massive damage output on his Secret technique but since he now also has a limit break he is even better.
At level 100 he has 1224 HP and 1147 ATK which are both solid stats.
His Ninjutsu is quite costly at 5 Chakra and does an ok amount of damage due to a good attack but a quite small multiplier. The Ninjutsu is an AOE one and has a 40% chance to lower the enemies ATK which can be useful for bosses.
Kakashi's best feature is his Secret technique due to the incredible high damage. He deals 8259 damage before any modifiers so with bonuses can easily get over 10000. It does change from an AOE to a single hit but it has a very good range to it so can be useful to re-position your characters.
His field skill reduce the chance of counter attacks which makes him quite good in PC as Sasuke is used a lot and I suspect that Rock Lee and Neji will make appears a lot in upcoming ones.
Very powerful Secret technique
Can lower enemy's ATK
Has both AOE and single hit so has uses for different occasions