Any actual hero would not have to announce themselves like Wyll does in the first fight. It should be one of the Tieflings doing the shouting if they actually believe in him. I guess that's where this character immediately starts going on the wrong track for me.

His first scene comes right after when he's training the kids, and quite obviously enjoys showing off to children. Like him less again.

If they are trying to portray him as a fake hero the writing in both cases is fine, but it doesn't make me want to have someone like that as a companion, at all.