Here are three background plates I did in November for a Phineas and Ferb comic. To speed it along, I did these three plates of Doof's lab being destroyed to save time so then I just had to draw the characters and then move them or tweak them as they talked so there would be variation in each panel. Basically it was like doing a storyboard. I've done this kind of time saver before on Scooby as well if it's the same scene in say a laboratory or office building. Animation does this naturally but comics used to have each background drawing drawn separately or retraced in each panel, though with a lot of comics being drawn directly or tweaked in the computer nowadays artists can do these tricks rather easily now. This is a time saver for sure.