Based on this https://www.blendswap.com/blends/view/18446 (using rigify) Basic weight painting and corrective smoothing is applied before the multiresolution modifier. This model is intended to be used as a basemesh for modeling outfits and armors for example. topology isn't modified, so it may not be very suitable (especially around the eyes), you may need to do manual retopology depending on your project note : The anatomy is by no means perfect.
Hey, I modified this a bit to make a right for a webcomic character, a supervillain named Green Skull. I've used it as a reference for a while. Here's a render of my version: https://pbs.twimg.com/media/EZSlatJXkAITAzD?format=jpg&name=small