21. PROTO-SHOGGOTH Abomination, Cthulhu
HPL uses the term "proto-shoggoth" in a single story, and then only in passing; no explanation is given for the term. In Chaosium's CoC game, the name has been applied to a human/shoggoth hybrid, but I don't buy that. I suspect that proto-shoggoth refers to a newly-spawned abomination, not yet fully invested with the size and power of its parent- a "lesser shoggoth", if you will...
Plot Twists: +0
D:15-14-13-13-12-X Protoplasm (Stamina) / Regenerate
*This monster can move through Blocking terrain; if it does so, reduce its Movement value by half (it cannot end its move in Blocking terrain).