I've played a few kran in my time in plane shift, Mainly i've found Kran to be a relaxed race, not a jumpy enki or anything, from pacifists, to warriors Kran can be both. But then again most races can, its just kran work excellent in both fields. Most kran don't wear much armor, but if you do, then have that in your description, most of my character's descrptions are mainly about their armor, weapons. As a description is not a short history of your character, nor is it where you'ed talk about your personality, its just what a person would see at first glance, the other information like history, personality, well people learn about that through role playing with your character.
Kran do not have to be dumb, or have a speech problem, contrary to the steryotypical kran. Like zanzibar said, they could be poets or philosophers, even alchemists. You should first start by brainstorming "How did my character come to be? what was his/her younger years like?" This will help you get an idea of how the character's personality should be. Perhaps at one point your character served some time as a soldier, in which case he would be disciplened, aggressive and serious. Or a scholar, wise, and intelligent.
Really there is no end to what a kran's personality could be, or how one should be played.
