C-3P0 leaves Mustafar along with Obi-Wan , Padmé , and R2-D2 in Star Wars : Episod III – Revenge of the Sith .
Obi-Wan pick up Vader 's lightsaber and leaves Mustafar with Padmé , R2-D2 , and C-3P0.On Coruscant , Yoda battles Palpatine until their duel reaches a stalemate .
Star Wars-COLON- Episode III – Revenge of the Sith