On "Buffy the Vampire Slayer", what is Willow's last name?

“On Buffy the Vampire Slayer, what is Willow’s last name?” The answer is Rosenberg. Willow Rosenberg is one of the series’ central characters, portrayed by Alyson Hannigan throughout the television run from 1997 to 2003.

Willow begins the show as a shy, highly intelligent student and computer expert at Sunnydale High School. She becomes part of Buffy Summers’ close-knit group, informally known as the Scooby Gang, and gradually develops from a research assistant into a powerful witch.

Her story is one of the show’s major long-term character arcs. Willow’s relationships with Oz and later Tara Maclay are important to the series, as is her struggle with magical power and grief. After Tara’s death, Willow becomes the season-six antagonist commonly called Dark Willow before eventually returning to her friends and helping avert a supernatural catastrophe. The surname Rosenberg also reflects the character’s Jewish family background, though the show explores that aspect only intermittently.