That is absolutely not a southern accent.

Because it meant his quiet easy life on Earth was over and he had to return to his Viltrumite Mission. I think from that moment on he just kind of switches off the part of his brain that cares because he catches his own disappointment and knows it runs counter to what he thinks he has to do. He’s in denial how important his life on Earth is to him, and when he first finds out we see his real gut reaction for just a second before he pushes it down and sets out to fulfill his mission.

I cried about Rex.