| Azothath |
"Fleshwarp" on AoN
the feat leads to general rules, neither grants the crafter control or even a bonus to Diplomacy. In fact due to the fact that the process is similar to t0rtur3 (as it is Evil) I'd expect a lingering negative circumstance modifier if not starting at a hostile attitude.
Charms, compulsions, modify memory and other magics will probably prove helpful for the crafter.