This is a model a friend sent me for some practice way back when. It's one of those things I work on to get a better understanding of using Substance Painter. Unfortunately, it's not very optimized and has some errors so I don't know if it will become anything more than a practice project but I wanted to share my progress.
I started by cleaning up the base model of the stray polygons and then sculpted more definition of the anatomy in Blender. Then I did a total rework of the topology in Topogun 2, then pushed the detail further. Once I was satisfied, I moved him to Painter and textured him to where he is now.