This article contains characters that are originally from the Lego Movie. But they may be supported with fanon info.
In Shroob12's universe, the Doom-Bots are Lord Business's fraction of the Doom Clan and his favorite henchmen for Garmadon. They work as employers for Lord Garmadon.
They were made to destroy the Ninja as a police force for Garmadon with his Doom Drone and Nindroid armies as normal troopers and policemen, businessmen, and other occupations under Garmadon's america.