They're all nice. Don't worry about how nice or mean they are. Your biggest problem is "you". Professors will keep being nice as long as you do your work and TRY HARD. They don't care if you're good or not because being good means nothing to them. There are good artists that are terrible people etc etc and vise versa. If you're bad they can work with you to make you good, if you're good they'll work to make you better.

We have quite a few professors:

Fish - Head of the department. Really nice guy.
Dove - Probably the nicest professor in the department.
Gildersleeve - I didn't have a class with him but I hear he's kickass.
Jantze - Hard but worth it if you want to try your hardest. Tough grader, probably the toughest.
Larison - Same as Jantze. Really fun and does AMAZING sculpture classes.
Goto - Super laid back. It's all on you to get stuff done in his classes because he won't remind you. Don't. Fall. Behind. Super nice and Dove's best buddy.
Lyle - Probably the most famous teacher (Spiderman + Robin). You either love him or hate him. Kick's your butt in a very good way.
Mia - Didn't have class with her but I hear nothing but good things.
Julie Collins - Sweet and fun. Her computer classes are amazing.
Duncan - Laid back, knows his stuff very well. Amazing for hisory of comics class.
Lowe - He only teaches one class and he is AMAZING. I never took his class but man.. I know it's good. Very Busy guy.
Hudson - Worked with Nasa and a bunch of other places. Super fun classes, laid back like Goto. You either love him or hate him.
Ralph - Worked with Nickelodeon magazine. Very cartoony style.
Kneece - Amazing writing professor. Talking story with him is a lot of fun. He only does the writing classes

And I think that's it.. Sometimes we have guest professors but that's something else. Hope this helps. Your question was way too broad.