Spoiler Kingdom is actually really amazing and I regret not starting it sooner.

Good shit my man, you've finally joined the Kingdom greatness. Are you watching the anime? If so, I recommend switching over to the manga asap. You'll appreciate the series a whole lot more.

Ryo Fui.

My memory's a bit foggy about the early events of Kingdom, so I'm not sure on this but do you mean Ouki here? The guy with the greatest lips of any fictional character exist?

The characters I thought of when TAC mentioned the minister is Ryofui. Then the general who switched side thought he was referring to Shouheikun. But then the zombies got involved thought TAC was referring to Mangoku or Hakuki with the whole burying of 400k people.