Complex sentence: Alexander "Xander" Harris is a fictional character in the television series "Buffy the Vampire Slayer", as well as in numerous items which belong to the series Expanded Universe, such as comic books, tie-in novels and video games.
Split into simpler sentences: Alexander "Xander" Harris is a fictional character in the television series "Buffy the Vampire Slayer". The character also appears in numerous items which belong to the series Expanded Universe, such as comic books, tie-in novels and video games.