Dawn Summers is a fictional character created by Joss Whedon and introduced by Marti Noxon and David Fury on the television series Buffy the Vampire Slayer, portrayed by Michelle Trachtenberg. From Wikipedia
Oscar-winner ChloƩ Zhao will direct the pilot penned by Nora and Lilla Zuckerman, refreshing the series with a lighter tone, modern social media themes, new characters in dialogue with returning favorites.