The biggest winner of the fight between Dem Paltrow and Sir Cedric was undoubtedly Eren, as without Dem's intervention, the leader of the Virex Corps would have undoubtedly succeeded in his mission to kill the poor boy.
However, while he was the biggest winner of this event, he himself was not even aware that his life had been saved by a notorious criminal, as he remained purely focused on capturing more and more human territories.
Over the two past two months, he successfully managed to infiltrate the Empire's land, breaking through several choke points as he managed to claim about 100 square kilometers worth of land from the Empire, which was a significant achievement.
With every win, his level skyrocketed and his personal strength improved with him being able to now participate in the demon attacks which he previously only commanded, an action which helped further solidify the respect that his men had towards him.