Lord Business was the President of the Octan Corporation and the World.
He serves as the avatar of the Man Upstairs/ Finn's father. Lord Business' obsession with keeping everything the way it is comes from the father's obsession with using Legos for his construction plans.
8 1/2 years ago, Business stole the Kragle, a weapon that glues the world together.
In the current time, he set up the TAKOS (Tentacle Arm Kragle Outside Sprayer; pronounced "Taco") so he could use the Kragle on the world.