J. Michael "Mickey" Haller (d. 1970) was the father of Harry Bosch and Mickey Haller, and the grandfather of Maddie Bosch and Hayley Haller. He was a famous criminal defense attorney, a registered Democrat, and lived on Canon Drive in Beverly Hills.
He once "handled one of the Manson girls," and later defended gangster Mickey Cohen in the early 1950s. In the late 1950s, he "won an acquittal for the so-called Highwayman." In the late 1960s, he refused to take on the defense case for assassin Sirhan Bishara Sirhan, because he "liked Bobby Kennedy too much to defend his killer."
He represented prostitute Marjorie Lowe on six loitering arrests between 1948 and 1961, and later filed all of the paperwork for Lowe to try to regain custody of her son. After his death, his youngest song deduced from his "old account books" that Haller Sr. "had a soft spot for the so-called women of the night."
Haller did not meet Bosch until the man was on his deathbed, and revealed that Harry had a half-brother.