I was looking at a video I took on my PS4 while fighting Hell Charles, and when a piece of debris slapped my face, I noticed something:

Hell Charles and Warren were unloaded 1 frame, and the next, they were back. Only Hell Charles' legs remained when they were unloaded. And this is my OP save.

Charles doesn't stand a chance against me. I now own Aranearum Island. Not Charles.