Bach was a former slave turned slave broker living in the Capital.
Bach was a young man with light brown hair and amber eyes. He wore a formal suit with an orange jacket and tie, a pinstripe shirt and black pants with suspenders. On his chest, he had a mark proving that he used to be a slave.
While initially appearing kind, Bach was in truth a heartless man only caring about the money. He claimed that there was a reason for him turning to human trafficking since he had been a slave himself before.
Bach bought three young girls, Air, Fal and Luna from an unnamed village which was deeply in debt due to the over taxation of the Empire. He was initially portrayed as a kind and caring master, allowing the girls to buy clothes with an allowance of money that he gave them. Later, he was revealed to have a sinister agenda, reselling the girls to a group of "Enthusiasts" who enjoyed torturing young women and feeling no pity over their suffering. After Air contacted Leone, Night Raid was contracted to kill Bach and the enthusiasts.
Bach was eventually killed by Akame, who cuts him down despite his protests, even going as far showing his slave brand on his chest to justify his reasons.