Going back before the twins appeared in the Great Void Black Hole...
Aby was supposed to take Mamato's body, and he intended to. However, things changed when Mamato told the twins' group about the method to make all the Abyssal Beasts accept whatever they say once they went to their home.
"Once you get there, the Abyssal Beasts will immediately identify the use of one of the secret Abyssal Paths. They are prepared for two things. First, the Werdlem Empire found it and was checking where it ended. Or second, that a chance to escape appeared."
"For them to recognize the second option, you must immediately say: Our God, Huver, has finally blessed us. The elders there will recognize the password. With them, you will get all the Abyssal Beasts in our home to follow your orders."
Rean and the others just nodded. That was simple enough. However, Aby was another story. "What did you say?"
Mamato looked at Aby. "What? The password? Our God, Huver, has finally blessed us."
