How Did Blackbeard Acquire His Second Devil Fruit?
- Blackbeard somehow copied the Gura Gura no Mi powers, similar to how Dr. Vegapunk copied (to a certain extend) the Pika Pika no Mi from Kizaru and gave it to the Pacifista. In essence, this isn't actually having two Devil Fruit powers, but instead a copy of the earthquake power.
- The Yami Yami no Mi allows the user to absorb Devil Fruit powers from dead users and assimilate it into their own body, without causing their bodies to explode. It is a "unique" fruit, even for a Logia.
- Blackbeard somehow caused the Gura Gura no Mi to grow after Whitebeard died, and then consumed it. He didn't explode due to his "atypical body", as Marco stated.
What does everyone think?