So here's the Roles I have for this.
Elphaba- Raven
Glinda/Galinda- Starfire
NessaRose - Terra
Fiyero - Robin
Boq - Beast Boy
Dr. Dillamond - Cyborg
Madame Morrible - Madame Rouge
Wizard - Malchoir
Elphaba's Father - Trigon
Elphaba's Mother - Arella
Shen Shen & Pfanee (Glinda's friends) - Bumblebee & Argent
Avaric (Fiyero's Servant) - Alfred Pennyworth
Other characters will be just random