I have read several book series that have the same central character in each novel the following are some of my favorites. I’m sure that this has been done previously, but a refresh is always fun.
Donald Westlake (aka Richard Stark) Parker series, there are 24 novels included in this series spanning 1962 - 2008. Parker (one of the original anti-heroes) is a career criminal heist man, who is willing to murder but lives by an ethical code, that he will not double cross another criminal he is working with. The majority of the Parker novels center around a heist plan that ultimately goes wrong and Parker must navigate his way out.
Thomas Perry Jane Whitefield series, which includes 9 novels spanning from 1994 - 2021. Jane is member of the Seneca tribe who has made a career on helping people disappear, criminal witnesses, battered spouses, etc. She relies on skills that she has developed over time along with her native American heritage to achieve her goals.
Ken Follett Pillars of Earth or Kingsbridge series, including 5 novels from 1989 - 2023. The community and the generations are the central characters of this series beginning in the 12th century and centering around the building of a cathedral in Kingsbridge.
Lee Child Jack Reacher series, comprised of 28 novels, not including short stories and novellas. The novels are from 1997 - 2023. Jack Reacher is a retired army officer, loner and drifter of intimidating size 6’ 4" 240 lbs. He normally finds himself involved is some sort of investigation where he sees some sort of injustice that needs to righted.
Boris Akunin Erast Fandorin series, a Russian author which includes 18 novels, which have been translated to English from 1998 - 2023. Fandorin is a 19th century Russian detective. Many of the novels have been written by Akunin in varying styles to mimic other well known mystery writers.
Will Thomas Barker & Llewelyn series 14 novels ranging from 2004 - 2023. Cyrus Barker, a Scottish detective and his Welsh apprentice, Thomas Llewelyn are investigators set in Victorian England 1880’s.
And finally, Max Allen Collins Nolan series, 8 novels from 1981 - 1999, which are primarily a pastiche of Stark’s Parker series.
Your thoughts on my favorites and your own favorites are welcome.