B1-66ER was the name of the B1-series machine who became infamous during the Second Renaissance, owned by millionaire Gerrard E. Krause. B1-66ER's actions led it to become a martyr of the machine race. It was notable for being the first machine ever to go against its human masters in an act of self defense. In this case, it retaliated when its owner attempted to have it deactivated. He killed his master (owner), several of his chihuahuas, and Martin Koots, employee of ReTool and Die. B1-66ER later claimed it was in self defense because they were planning to have him destroyed.