In the literary world of Bosch is the half brother of Michael (Mickey) Haller from The Lincoln Lawyer (2011). They have same father; also a lawyer named Michael Haller. Michael Jr is the legitimate son, while Harry Bosch is illegitimate.
Bosch's partner is depicted as having something of a clothes fetish and is heavily into designer fashion. In reality actor Jamie Hector has his own fashion label caleed Royal Addiction