Tentacle limbs and miscellaneous body parts

While looking through the Humanoid.pcx file, I noticed that there are odd looking body parts and types inside. I'm also noticing that there are sprites for animated tentacle limbs. Are there any call-tos to these bizarre things inside? If so, what would their usages be?

There's mention of them in the old documents, but they never got implemented and IIRC there's no references to them in the source code itself.
I imagine the tentacle limbs would be granted by mutation effects and/or God prayers (e.g. something Scabies would do) and would have higher DEX/AGI at the expense of lower ASTR/LSTR. Perhaps classed as whips for unarmed attacks.

I see theres muscled/fat body types in there as well. Are they used for things like Oree and Mr. Sumo?