21B, droid, star wars, medic droid, bacta tank, blue, medical, jason may, jimmycakes, artwork, drawing, sketch, inked, inkMany of you may recognize the 21B Droid from Empire Strikes Back. Luke was placed in a Bacta tank to get well again, so that he may live another day and fight the Empire. This was always one of my favorite droids. I have a feeling I liked it so much because he had a transparent torso and a removable face mask.