Original: Buffy is also helped by friends she meets at Sunnydale High: Willow Rosenberg (Alyson Hannigan) and Xander Harris (Nicholas Brendon).
Simplified: Willow Rosenberg Willow Rosenberg (played by Alyson Hannigan) was Buffy's schoolmate and best friend. Xander Harris Alexander Lavelle "Xander" Harris (played by Nicholas Brendon) was another good friend of Buffy.