We have worked on many characters that we can not publish at the moment. What we can share is a sample model of a realistic-looking fantasy game character; the Crusader vampire. We designed the figure, clothes, weapons as well as the model and textures. To achieve our standard of realism, we used a significant number of photo references and real displacement textures. Since we did not use 3D scans, the biggest challenge was to create the likeness of the face and its character. All images rendered in UE4 without using the post-processing effect.
You can check more stuff here: https://cassagi.com/
If you're looking for an outsourcing studio for your next project, just let me know.