Logan of course and it was the best interpretation of the character yet on film.
I found myself falling in love with Mariko as Logan dud, at first I knew they were going totally for each other but I we worried it'd be forced, it wasn't at all. She was fantastic.
Yukio was my second favourite character in the whole film, was worried she was going to die or turn out evil but thankfully she didn't.
I hated Viper but in a good way, she was terrific.
Lastly, I cared so much about Bear, was gutted when the inevitable happened
Other characters were good but the above are the ones I ultimately liked best.