Fortunately, he had shown mercy to the remaining Lords earlier due to the Tier Six advancement.
Otherwise, he might not even be able to gather these 10 Lords.
As a Lord who pursued mechanical technology, he never had the idea of taking captives, even knowing that a surrendered Lord could serve as a powerful Hero Unit, he never accepted any surrender.
Compared to the loyalty of a Lord, he preferred to trust the cold and unfeeling machines.
Not to mention the surrendered Lords, to this day, his territory still had no Hero Unit of biological types.
All the combat power was achieved through machinery, even the few Hero Units created for advancement were elevated by exploiting bugs with machinery.
Anyway, unlike other Lords who were extremely short of combat power and needed Hero Units to supplement, he followed the path of full personnel advancement.