Rocks D. Xebec Was a Former Celestial Dragon

One Piece Shanks Theory: Is the Yonko a celestial dragon? Everything you should know! - Spiel Anime

Xebec is Dragon's True Father and Luffy's Grandfather! - One Piece

Rocks D. Xebec, Villains Wiki

Monkey D Dragon Hid A Celestial Secret for 25 years: Mihawk and Buggy Bounties Explained (One Piece)

Majora's One Piece & iCORE blog - About God Valley and Rocks D Xebec What if till

HUGE THEORY: Blackbeard is Rocks D. Xebec, and Dragon and Shanks are Xebec's sons : r/OnePiece

Speculations - Rocks D. Xebec might come back..

What would happen if a Celestial Dragon harms another Celestial Dragon (One Piece)? - Quora

Will Luffy have a different outlook on Roger after learning about the God Valley Incident? Would he view Roger's reason justified helping the celestial dragons? - Quora

The Real Reason Behind the Current Roster of Yonko : r/OnePiece

Explaining All 10 D. Clan Members in One Piece (Xebec, Dragon) — Eightify

Who is the strongest celestial dragon?

One Piece: 10 Things That Make No Sense About The Celestial Dragons