The Necromancer Tower Master was someone who had managed to escape from a Primordial. Even with multiple Hellhounds surrounding him, he refused to give up.
Although he wasn't sure why he was being attacked, he fought back fiercely. This was the first time Eren had seen the Necromancer Tower Master fight with all his might.
The flames of the Hellhounds were the worst enemy for the essence of death that the Necromancer Tower Master used. Despite that, the man was still frightening.
Within an instant, he killed two Hellhounds, ripping their hearts apart. The Hellhounds fell to the ground lifelessly, the essence of death slowly invading their bodies.
The Necromancer Tower Master made his way towards the exit of Hellhound City, killing Hellhounds as he went.
He also managed to turn the Hellhounds he had killed, bringing them back to life to fight for him.