Yami Yami Devil Fruit by Soapfish-Art on DeviantArt

Yami Yami no Mi, One Piece Wiki

Yami Yami no Mi, Wiki Chopper

One Piece: 5 Devil Fruits That Are Stronger Than Pika Pika no Mi (& 5 That Are Weaker)

The 13 Strongest Logia Users In One Piece, Ranked

yami yami no mi, Wiki

ODA CONFIRMED, BLACKBEARD YAMI YAMI NO MI IS NOT LOGIA

A fruta de Barba Negra Yami Yami no Mi (One Piece)

Discuss Everything About One Piece Wiki

I believe Blackbeard's fruit just like Luffy's has a secret name, I think Blackbeard Yami Yami no Mi is actually the Hito Hito No Mi Mythical Zoan Model: Davy Jones: : r/OnePiece

What is the best theory about Blackbeard's capability to eat two devil fruits? - Quora