User blog comment:Jkphantom9/New WIP image from Austin Hardwicke (one of Monty's animators)/@comment-18396318-20140626151406/@comment-3146930-20140626193245

Maybe all the characters use the same model, but they size them down later for the show. Looking at the image, they are in a pose that looks like the animators would use to inspect something, make sure everything was ok. Then for actual scenes, they fix the scale and make them taller/shorter. However I have no idea.