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In the moment Blake charged towards the two bosses, he actually had a plan. He didn't do things recklessly. He knew that these two powers held the power to wipe out the entire army if they could. Therefore, he provoked their anger and then rushed to fight them himself, gaining their complete attention.
By insulting their pride and mocking them, he managed to quickly bring their attention as he realized these Xenoid were a lot less than the others, they held strong egos, with strong personalities and even stronger emotions.
This was a weakness, despite how much the Xenoid wanted to be like the humans and aliens they had devoured, desiring to be more complex, this came with such a weakness, to be driven by emotions!
Pleasurobolia and Prideulieven.
These two children of the Xenoid Queen, "Ascended Xenoids" as they called themselves, were tremendously powerful, perhaps stronger than Agonitias and Psychomind in every way.