Nikki Wood

Nikki Wood was a Slayer and the mother of Robin Wood. She was portrayed originally by April Weeden-Washington and later K.D. Aubert.

Biography
Nikki Wood was an african-american woman from New York City whose Slayer powers were activated at some point during the 70's. Her Watcher was Bernard Crowley and she was the first and only Slayer known to have had a child, Robin Wood. She faced Spike on a subway car in 1977 and died at his hands, when he snapped her neck. She would later return in the series as The First to taunt Robin.

Behind the scenes
April Weeden-Washington originally portrayed Nikki. However, when the character was brought back, stuntwoman April was deemed "too mature" by the show's casting directors. They wanted a younger actress, who could seem more like a vulnerable teenage mother, for the role, so K.D. Aubert portrayed Nikki Wood in the seventh season. This means Nikki joins Buffy Summers, Faith Lehane, and the First Evil as characters in the Buffyverse that have been portrayed by more than one actor (not counting stunt doubles).