Capítulo 691: New Lieutenants.

There are people that hate him among these 100. But they are smart enough to let go of their hatred for actual benefits. The subordinates of the divine crown will get assistance from the world equal to that of the Emperor crown. Such a power is very tempting.

That's why these people will rather have their subordinates wear the crown of kings that they acquired. They chose to become his Lieutenants instead. It is an optimal way to acquire the power of Emperors since there are only two Emperor crowns. 

So these people aren't here to do him a favor. They are here to acquire a power that they can't acquire another way. The reason that they are here has more to do with their GREED than with her persuasive talent. But it cannot be denied that she is instrumental in bringing them here.