Cannon Man exists only in the live-action adaptation of One Piece. He was born when Wapol devoured several of his Drum Kingdom guards and merged them into a single super soldier. With artillery where his hands should be and a barrel mounted on his helmet, he charges into Bighorn obeying one order: tear the town apart.
Bulky and broad, Cannon Man carries a noticeable double chin atop his heavy frame. A worn royal guard uniform of the Drum Kingdom hangs on him, and a heavy iron helmet sits on his head with a barrel fixed to its crown. Where most people would have hands, each of his arms ends in a large cannon instead.
The same fanatic devotion that defines Wapol's other fused soldiers drives him as well. His loyalty leaves no room for thoughts of his own, and once he is told to wreck Bighorn, that single purpose consumes him entirely.
The guards who would become this fusion fled Drum Island in Wapol's company. While away, Wapol gained a strange power called the Baku Baku no Mi, taking it from Nico Robin during her stint posing as Miss All Sunday. Once back home, he swallowed his entire guard force and reshaped them into combined warriors, Cannon Man among them.
Sent to level Bighorn, Cannon Man took point. His artillery punched a hole through the town's outer barrier, and once inside he opened fire, scattering the residents in panic. He kept leading the assault until Zoro leapt in and broke the soldiers apart. Standing at the heart of the chaos, he blasted away at homes and people, and was about to finish a cowering woman when Dalton came charging in and bowled him over. He picked himself up and resumed shooting. Later he closed in on Zoro, who had been pinned to a wall by Pigman and Porcupine Spike Man, and readied a killing shot. Before he could fire, Luffy beat Wapol, the Baku Baku no Mi lost its hold, and the fusions came apart. The freed guards then gave themselves up.

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Cannon Man is a character exclusive to the live-action adaptation of One Piece, created when Wapol devoured several of his Drum Kingdom guards and fused them into a single super soldier. He has artillery where his hands should be and a barrel mounted on his helmet.
Cannon Man was created when Wapol used his Baku Baku no Mi power, taken from Nico Robin, to swallow his entire Drum Island guard force and reshape them into combined warriors.
In the live-action series, Cannon Man is sent to level the town of Bighorn, blasting through its outer barrier and firing on residents until Zoro breaks the fused soldiers apart. He is defeated when Luffy beats Wapol, causing the Baku Baku no Mi's fusion to collapse and the guards to separate.
Cannon Man is bulky with a noticeable double chin, wearing a worn Drum Kingdom royal guard uniform and a heavy iron helmet topped with a barrel. Each of his arms ends in a large cannon instead of a hand.
No, Cannon Man is a non-canon character who appears only in the live-action One Piece series and not in the original manga or anime.
Looking for more on Cannon Man? The One Piece Wiki on Fandom has a dedicated page with community notes.
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