Which Witch in Wicked is WICKED?

Wow, loyal Theorists, Wicked was THE movie event of the year. Everybody and their mother has seen Glinda and Elphaba on the big screen. Or, they're singing along to "Popular" or "Defying Gravity," at the very least. Now, we know from The Wizard of Oz that Elphaba is the Wicked Witch of the West. But is she ACTUALLY wicked? And what about her "bestie" Glinda? Is she actually evil? Let's analyze...