The flying demon character is one of my personal projects which I have created for my own enjoyment. Exploring a free-form modelling method in Mudbox, I started without any kind of a sketch and with only minimal inspiration (from sealife!) and let the creative drift direct the process. As a result, the model is not really optimized for texturing or animating, but it could become a 3-dimensional sketch of its own if needed.
The following three snapshots are captures from work-in-progress models.