The name be Metalbeard. And I'll tell ya my tale of woe!
~ Metalbeard introducing himself to the Master Builders and Emmet
Metalbeard is a major character from The Lego Movie and a supporting character in its 2019 sequel The LEGO Movie 2: The Second Part. He wanted revenge on Lord Business for taking his old body. He is voiced by Nick Offerman, who later voiced Gavin in Ice Age: Collision Course.
The LEGO Movie
A long time ago, MetalBeard and his Master Builder pirate crew infiltrated the Octan Tower. His fellow crew members were taken prisoner for the Think Tank, but MetalBeard managed to survive and retreat, though at the cost of being "bricked" by Lord Business (Even though he actually got dogpiled by drones of the Robo SWAT). He was then forced to build a new body from scratch, resulting in his present state.
After that, he was in the meeting of the Master Builders in Cloud Cuckoo Land. He then explains to Emmet about how he got "bricked" by Lord Business, despite coming up "with every conceivable plan imaginable". He soon leaves upon hearing the construction worker has no creative skill, saying he's "leaving on a lost cause."
MetalBeard soon rescues the gang on his Sea Cow when he notices Business' forces overlook the double-decker couch that was the gang's flotation device. Surprised, Metalbeard turns loyal to Emmet's "dumb and bad" ideas with the other Builders. After successfully infiltrating the Octan tower, Metalbeard assisted Benny in getting to the controls that are connected to the Kragle until they end up captured by Lord Business' forces. MetalBeard was seen on top of Benny's spaceship in the battle of Bricksburg.
In the real world, MetalBeard was created by Finn much to "The Man Upstairs"' confusion.
After the battle, MetalBeard gets ice cream and then saw Duplo Aliens.