The third little human's job is to help them meet the advancement requirement of rank 8 of the pathway of telepathy. They are going to brainwash normal mortals and even godclads for this.
They couldn't use their two legendary captives because they couldn't let these two go to act in front of other people after their memories have been changed.
It would be great if they could brainwash legendary godclads and use them to meet the advancement requirements, but these two will not have that fate.
The fate of these two is to help them meet the advancement requirements of the pathway of slavery and the pathway of killing. By the time this is done, the two of them will be dead.
Their deaths will also be useful because once they die, they will leave behind their divine flesh, which Legion can use to raise legendary slaves of their own. So Legion was looking forward to it.
