One Piece (dub) Episode 340 -

This episode introduces one of the arc's primary antagonists. His eccentric laugh ("Fos-fos-fos!") and gothic design set the tone for the weird science themes of the arc.

Nami, Usopp, and Chopper find themselves in a terrifying graveyard. They are ambushed by zombies that rise from the ground, though the "horror" is undercut by the zombies' surprisingly polite and mundane behavior. One Piece (Dub) Episode 340

The story splits between two groups of Straw Hats navigating the eerie island: This episode introduces one of the arc's primary antagonists

The English dub for this episode is widely available on major streaming platforms: : Offers the full catalog of dubbed episodes. They are ambushed by zombies that rise from

: Available for digital purchase as part of Season 10.

Chopper is thrilled to learn that the famous medical genius, Dr. Hogback , resides on the island. As a doctor, Chopper has idolized Hogback for his "miraculous" surgeries that supposedly brought people back to life.

The episode establishes the "rules" of Thriller Bark’s zombies—they are physically resilient but often retain quirky or pathetic human traits.