Funny about Chara - in the early versions of this story, he was a lot more avenging and a lost less angelic. I get the impression (you know how it is sometimes - these guys do their own things and all you can do is watch) that he genuinely cares about his teammates, but he also sorta gets off on using his power to play with people (that's all on the fictional side, of course - from what I've heard, the real Zdeno Chara is an absolute sweetheart).