Gravetouched Ghouls
It is noted in Libris Mortis that the King of Ghouls sometimes appears to incautious necromancers meddling with the Negative Energy Plane, forcibly converting them into ghouls to create worshippers for himself. Ghouls created directly by Doresain are known as gravetouched ghouls, which differ from standard ghouls in that they retain most of their original abilities. The gravetouched ghoul is, in fact, a templated creature based on the standard ghoul.
As a demigod, the King possesses the unique ability to add the gravetouched ghoul template to creatures to which it is not normally applicable.
Read more about this topic: King Of Ghouls