How would you suggest trying to write characters from Tokyo Ghoul, this is something I struggle with, especially with Uta

Okay but to be FAIR Uta is an enigma, even for his bestie/husbando Yomo, so you’re not alone there. 

It depends. I take any and all insights into their characters revealed by the manga, and sometimes I like researching any psychological roots of their idiosyncrasies. And sometimes I try to imagine what kind of background they’d have to turn out the way they are. 

Other suggestions: What’s a situation that might startle the character? Make them question their life? Make them angry? Sad? Happy? What would it take for them to fall in love? What would scare them? 

If you don’t know, make it up yourself. And roll with your ideas until it suits them.

You can be as creative as you want. 🙂