One Piece Episode 764 -

The "Cat Viper" appears at the end of the flashback, acting as a deterrent that forces Bege to retreat from the island of Zou.

One Piece Episode 764, titled , primarily features the major revelation of Sanji's family background and his sudden departure from the Straw Hat crew. Key Plot Features

It is revealed that Sanji is scheduled to marry the daughter of Big Mom , one of the Four Emperors, as part of a political arrangement between their families.

The episode confirms that Sanji is a member of the Vinsmoke family , an infamous name in the North Blue.