Have a look at The creative process behind the Stranger Things Demogorgon, by Spectral Motion Studio. When a young boy disappears, his mother, a police chief, and his friends must confront terrifying forces in order to get him back.
https://www.facebook.com/SpectralMotion/videos/1199209686840834/
See also:
https://www.youtube.com/watch?v=AzLpdY1pOA8