The Builder wears an earth green bandana and pants, along with a sleeveless white-and-green striped shirt with a pair of leather belts. The physical minifigure has a clean-shaven face, although he has stubble in 4850307 LEGO Battles, more closely resembling the face of a minifigure from 7244 Speedboat; otherwise, the two designs are identical. The Builder carries a cutlass in 6243 Brickbeard's Bounty, or a small hammer in LEGO Battles.
The Builder is a member of Captain Brickbeard's pirate crew, sailing aboard the Brickbeard's Bounty. In the set's comic, the Builder joins the search for a treasure map on the beach, then works with the Gunman to fire one of the ship's cannons. In the Quest for the Pirate Dictionary! LEGO Club Magazine comic, the Builder is among the pirates celebrating the discovery of the Pirate Dictionary.
In 4850307 LEGO Battles, Builders are the Builder units of the Pirates army. The Builder's stats are 1/5 strength, 140 life, and 2/5 speed, and costs 45 bricks to build. As Builder units are crucial to building bases and harvesting resources, Builders are playable in most Pirates levels in Story mode.
In the Pirates Act 3 cutscene, the Builder is in the crow's nest and spots approaching Imperial ships through his spyglass; he tries to warn his sleeping crewmates, and then throws a crab at them to wake them up. In the Pirates Final cutscene, the Builder cannonballs into the hoarded pile of gold. In the Imperial Act 1 cutscene, the Builder laughs as Governor Broadside is mocked by Brickbeard. In the Imperial Act 3 cutscene, the Builder is bribed by the Cavalry and Swordsman into revealing the location of Brickbeard's secret hideout on a map in exchange for a gold coin; the Builder points to a heart-shaped island rather than the skull-shaped island, and then sneaks away while the Imperials are distracted. The unlockable "Imperial Picture 1" concept art also depicts the Builder and Cavalry in the Imperial Act 3 scene.
- In the instructions for 6243 Brickbeard's Bounty, the Builder is erroneously depicted with white sleeves instead of bare yellow arms.