The Wielder Of Annihilation.

"What next now?" He asked himself.

Legion-1 replied, "This is considered a failure. It was expected that at least one out of 8 will fail so this is not a surprise. We will try again with another race."

They began planning for Legion-7's second race while he continued to search the egg for signs of life. The race that Legion is interested in next is a particular race that a certain female who could wield the power of annihilation belongs to. 

He saw that lady earlier during the final section of the trial of heaven. It was during the challenge section. The lady was fighting a grand god of disaster but none of the disasters could affect her.