Caesar's Defeat! The Powerful Grizzly Magnum!

After Law's cut drops the laboratory back into place, Sanji and Nami talk the terrified giant children into pressing on. The G-5 Marines spot Zoro carrying a protesting Tashigi in the wrong direction once more, to Sanji's fury. Chopper's medical room begins collapsing, so the medics carry him and Mocha to safety as he keeps watch over her. In the SAD room, the dismembered Vergo taunts Law, who silences him with a final cut and tells the enforcer to worry about his own fate before the chamber crumbles.

Watching his plan unravel, Caesar orders the vents opened to flood the room despite over a hundred of his own men still standing inside, dismissing them as guinea pigs he can kill and replace at will. The stunned subordinates fall silent, and a handful convince themselves it must be a bluff, opening the vents anyway. Caesar draws in the Shinokuni, ballooning into a monstrous form, then murders his remaining men to show off his might, which sends Luffy into a rage. Boasting that he will reign over a ruined realm filled with corpses, Caesar watches Luffy seem to run off, the captain calling on Momonosuke to guard Brownbeard. But as Usopp argues from the control room that Luffy would never abandon anyone, the captain stops, inflates both arms into Gear Third, and charges back, infusing Haki to bring the scientist down.

Assembled from Chapters 691 and 692, the episode rates around 7.5 and debuts both Shinokuni and the Grizzly Magnum. The anime shows that Caesar had not yet petrified every first-floor man before Luffy began winding up, and unlike the manga it stages a head-on collision between Caesar's Shinokuni form and the Grizzly Magnum, with Caesar panicking and pleading for Luffy to serve under him once the strike proves unstoppable.