Aris and the emissary, who didn't seem to be Kiel based on Rasmus's description. Kiel was wearing a white robe with gold engravings, and the one she was fighting with wore a red robe. She believed the one she was facing was Yaza, and based on Videl's information, Yaza was the leader of the other emissaries.
Rasmus and Javi killed the Corrupted and the possessed bodies that were busy fighting with the knights. They chose to play as backstabbers, hunting enemies that were busy fighting. They both were the reason the human forces could maintain their footing on the battlefield.
Uriel, Xena, and Thalior were at the front, acting as the spearheads of the formation. They opened the path for the commanders and the warriors to spread and prevent the enemy from surrounding them so easily. Everyone moved in unison, and they were all strong enough to keep up with those three.