The titular character on the not-yet-named Renee Ballard spinoff of Bosch: Legacy is inspired by a real person. The Ballard spinoff will be the third show in the Bosch franchise, which began as adaptations of the books by Michael Connelly. In the original Bosch, the title character was an LAPD detective, while in the revival series, he is retired while his daughter is a cop. Bosch: Legacy has been renewed for season 3 and will run concurrently with the new Ballard series, rather than the new spinoff being intended as a continuation of its parent show.

https://screenrant.com/bosch-renee-ballard-real-person-inspiration-explained/