Gaius

Gaius was a Yodotai at the order of Phyrrus, and leader of his honor guard.

Khol Wall
They reached the Khol Wall, being Phyrrus the only one allowed to pass to met the Khan Moto Chagatai. When Phyrrus returned home, the honor guard was left behind, as a token of his nation's goodwill. It was a usual conquer Yodotai practice, to left behind Yodotai to learn the tactics of the local. When the time of war began, they used this knolwedge with unmatched results.

Jin-sahn learned about Yodotai with Gaius, and viceversa. Gaius was not aware that the Khan ordered Jin-Sahn to send them into the thick of combat at every turn, to create "accidents", making sure the Yodotai did not return to their lands.