Merlin

Of ordinary build with fair skin, Merlin sports a thin nose and spiky brown hair tucked beneath a Marine cap. That cap breaks from the usual white, coming in grey instead. He layers on a grey jacket with rolled cuffs, a gold zipper edged in black, two chest pockets, and three more clustered on the lower left. Black belts wrap around each bicep and his torso, and a dark harness stamped with the word Marine holds a shield and bazooka across his back.

Merlin is callous and out for himself, betraying his own side by trafficking weapons to pirates. He leaned on his Marine authority to bully Fred into hauling explosives to a pirate vessel, then made threats when the youth resisted. When Luffy and Jeanne openly doubted whether he was a genuine Marine, Merlin grew prickly and vindictive, barking orders for his men and his pirate trade partners to attack the pair.

Merlin appears during One Piece: World Seeker. He holds authority over his Marine subordinates and over hired hands like Fred. Though no larger or sturdier-looking than a typical Marine, he soaks up several heavy hits from Luffy before going down, yet still falls without much real difficulty. In combat he relies on a bazooka and a broad shield, using the latter to deflect some of Luffy's blows and even swinging it as a bludgeon, although it cannot withstand the Gear 3 techniques. The story has Fred arriving to deliver goods while questioning why Marines would cooperate with pirates, prompting Merlin to threaten his life to keep him quiet. Luffy and Jeanne then showed up to return Fred to his sister and openly challenged Merlin's legitimacy, at which point he ordered his men and the pirates to strike, all of whom Luffy swiftly overcame.