What is the name of Buffy's father?

What is the name of Buffy's father? Buffy's father is Hank Summers. He is the former husband of Joyce Summers and the biological father of Buffy Summers in Buffy the Vampire Slayer.

Hank and Joyce divorce before the television series begins, and Buffy primarily lives with her mother in Sunnydale. Hank remains part of Buffy's family history, but he is often absent from the show's central action. His distance becomes more noticeable as the series progresses, especially after Joyce's death, when Buffy and her younger sister Dawn are left to cope with adulthood, supernatural danger and family responsibilities largely on their own.

Hank is sometimes confused with the men who fill important mentor or parental roles in Buffy's life. Rupert Giles is her Watcher and a father figure, while Angel and Spike are vampire characters connected to Buffy romantically and through combat. None of them is her father. Hank's surname also explains why Buffy and Dawn are known as the Summers sisters, despite the family's changing household arrangements.