Elphaba is the main protagonist of the famous Gregory McGuire novel, Wicked and its musical adaptation. She is the unlikely friend of Glinda. Her intention is to save Oz, but she eventually ends up becoming the Wicked Witch of the West.
In the musical, Elphaba is a belting mezzo-soprano.
Elphaba was named after the initials of original Oz author Lyman Frank Baum.