Explosive

Explosives cover a wide family of devices that go off on a delay, on contact, when triggered, or by remote command, scattering a damaging or distracting payload. They are most often used as projectiles, both to keep the user safe and to strike at range. The Marines and many pirate crews load cannonballs with explosive material that bursts on impact or when struck, while other charges release things like smoke instead of pure destruction.

The simplest category is the bomb, set off by impact or a timer, with most named after whatever they carry inside. Smoke bombs throw up a screen for escape, as when Higuma fled with a captive Luffy; flash bombs blind targets with a burst of light, like the disguised Flash Barrels Gecko Moria used as bait; and poison gas bombs spread toxic clouds, the deadliest being Krieg's MH5, potent enough to wipe out a village. Cannonballs serve as the default ammunition of ships everywhere, with special variants such as Buggy's devastating Buggy Balls and Big Mom's sentient living cannonball Homies. Beyond these sit dynamite, land mines, rockets, grenades, torpedoes, and even bomb collars strapped on slaves and unwilling guests that detonate if a chain breaks or a boundary is crossed. Fireworks round out the milder end as a low-explosive used for celebration.

A long list of fighters lean on explosives. Krieg packs his armor with bombs, shuriken charges, and the MH5 shell; Usopp's pellets carry small charges and spices; and Pedro relied on dynamite for hit-and-run raids, sacrificing himself against Perospero. Many Devil Fruits generate blasts directly: the Bomu Bomu no Mi lets Mr. 5 turn his body into a bomb, the Horo Horo no Mi gives Perona exploding ghosts, the Nikyu Nikyu no Mi powers Kuma's air-compression shockwaves, and fruits like the Gasu Gasu, Buki Buki, Pamu Pamu, Beta Beta, and Pika Pika no Mi all yield explosive effects. Non-canon entries add the Dyna Stones, weapons said to rival the Ancient Weapons, which Z exploited in his Grand Reboot plot. A handful of characters, such as Ideo and Vinsmoke Ichiji, even produce blasts through sheer physical technique without any fruit at all.