I think you should talk about how he was very narcissistic and conceded, that plays an important role on how people should be that way. Or about how when he died how his people reacted and worshipped him even though he was dead. Or how he may have been cocky but when it came to fighting he made it fair. he wouldnt use a weapon if his opponent wasnt.
A because by definition that is what a salver is
In The Boy Who Harnessed the wind, William clubs the windmill and faces the villagers, who think he is foolish.
The appositive states what the subject has or does in a sentence