*Throws kunai at the Link-haters*
He's supposed to be mute(at least he's not Gordon Freeman), and as such, sometimes has a compelling reason for what he does(In Wind Waker, his sister gets dragged off, in Twilight Princess, he gets hounded[literally] by an imperious living shadow that for the first part of the game Link simply wants her out of his life), and, while he's supposed to allow player immersion in the world around him(actions speaking louder than words), he clearly has a character all his own. Besides, maybe Miyamoto caught wind of fanfic, eh?
As for the Chief, leave him be. Similar concept to Link, but you read even more into his character by what little he says(look at what he says to Cortana and Johnson) and what he does(that whole promise to Cortana, for instance). He's a professional soldier, and in the middle of a combat situation, a professional soldier doesn't need to talk. You just have to engage your brain a little more to see the character.
Worst you asked? Most of the male protagonists from the latter Final Fantasy series. I can see why Yahtzee has contempt for them. Angsty, whining, and with a disturbing lack of masculinity, these "heroes" irk me. However, in most FF games, there is a quiet, tank like badass that makes up for it, and who usually has a cool story behind him(Auron, Ashe, Vincent).
