The king of the Dynasty introduced himself to all other members while also hinting at his eagerness to recruit Azrael, Vanessa, and Agares while mentioning various benefits.
Making Danzel realize that this king might as well be as shameless as the century-old Lich. Though he didn't especially point it out, it was clear enough of his intent that even Danzel realized it.
After all, the leader of our group, Velkir was in the same room.
As to why he didn't seem eager to recruit the others, it wasn't hard to guess...
Shiro and he were known as the apprentice of Velkir, a powerful necromancer. It was natural for others to assume that we will follow his ways of magic.
And with necromancy being quite unpopular among the common folk, it was best to avoid recruiting troublemakers.
As for Sartan...well, I don't blame the king for not trying towards the immortal juggernaut.