The sculpt is based on the last description in the Dunwich Horror short story (1929 H.P. Lovecraft) as well as the Dunwich Horror Motion picture (1970).
There is a human half with emaciated features that appears to be in pain. There is a few tentacle sucker scars on the abdomen and gills forming around the neck area. The back of the sculpt reveals a twisted spine and a small fin breaking through his skin.
The Mythos side has a looming octopus head a few stretched sinew , a squid, a few muscles tending the back and a single large out reaching tentacle.
Originally it was going to be a Deep One or Dagon, but I felt more compelled the direction I took. The human face was inspired by the illustrations of Gustaf Tenngren and Sanford Kossin.