Following the idea of the story of fantasy dystopia with an evil scientist being posseses by a demon, I had to work on designing the human and the demon. The sheet below presents early designs of both characters:
For the scientist I decided to go with number 2, although the demon needed some more exploration. Below is what the demon's design and his possible facial expressions:
However, after talking it through with Justin, we agreed that it will be better to give the human character just small characteristics of the demon instead of changing him fully.