Comment by Spider-man on One Piece - Chapter 1176

What about xebecs?? Is it possible that after he died by garlings hand he also came back to normal but captured him to do experiment on him or make him slave or something and maybe blackbeard knows something about it and that's why he is trying to go to holy land to find clues to his father, and maybe that's why he told his subordinate to copy elder saturn to infiltrate holy land or to check his memories to know what happened to his father on that day because Saturn was there on that day and he was also the one incharge of science and experiment department. It's just my theory