I think you'll like Saya once she's interacting between all of us - she's not as calm about most things like Jaden and is very much in your face about stuff, but she wasn't treated like most people. Sheltered, looked down on because of her powers. Her family kept her hidden and let her cousin beat her with a bokken - wooden katana - and eventually she just snapped. But I hope someone can reach out to her. Become friends to her because I'm sure her and Jaden are gonna but heads because they both have Type A personalities. 

The American-turned-British kid and the Japanese shrimp are gonna be at odds with one another because they're Iron and Bismuth. Both Metal based and I think some metal types are probably not going to like one another. I think Dan has a Type A Personality as well, just in passing thought.