Board Thread:Manga Discussion/@comment-784068-20140630215917

I'm not kidding.

Soo... this is a fan theory

1. The holding room of his experienced a blackout, even with auxiliary lighting and he escaped during the decades into the present.

He is still alive, right?

2. He is the only character known who could smash his own body to squeeze into tight spaces and recover unharmed.

In a prison, there are little features that allow inmates to make an escape. Santana is the only known character who has done this to escape his cell with the Nazis, and I'm sure that he could also do this to get back in.

3. His purpose for having sex with Diavolo's mother? To repopulate the Pillar Men once again and take over the world.

Something to that effect. Diavolo's unnaturally terrifying strength has to have had to come from someone, even as stand form. 