The family's foundation
In James Patterson's books, Nana Mama took Alex in when he was 10. Widowed from a husband she adored, she never remarried. Close to 90, she's still going strong, raising Alex's kids and treating his friends and loves like family.
On screen, she's played by Cicely Tyson in the 2012 film and by Juanita Jennings in the series Cross.