I had the pleasure to explore and design the legendary Behemoth for Stellaris: Biogenesis. This one was such a blast to work on and I'm happy with the result and how it looks in game. In addition to the sketches I took this one quite far in Zbrush, That model was later cleaned up to be used as a high poly model by the 3d team.
Art direction: https://www.artstation.com/scott-austin
Note: No AI was used in the creation of this concept whatosever.