Buffy the Vampire slayer, often shortened to simply Buffy was a hit sci-fi show from Joss Whedon which ran from 1997 to 2003.
Buffy Anne Summers
Buffy Summers is the title character. She became a vampire slayer when the slayer before her died, and she arrived in Sunnydale after she was kicked out of her previous school for burning down the gym. She has died twice since the show began, first in season one when she drowned, and secondly when she jumped into oblibivion to save the world in the finale of season five.
Willow became Buffy's friend on her first day at Sunnydale High and has since become her best friend. She started off a a geeky nerd with no self confidence, but by the end of the series, she was no longer as shy and had become a powerful witch. In the seson six finale, she turned evil and tried to destroy the world.
Alexander (Xander) LeVelle Harris
Buffy moves to Sunnydale, but the Master wants the vampires to take over the world.