Palladium Fantasy pg 313 under Sub-Demons says:
- Gargoyles are a sub-class of demons, perhaps the result of genetic mutations in the demons' evolution
- Gargoyles and the wingless gurgoyles are considered to be inferior by true demons and are continually harassed and persecuted by them.
- Consequently, gargoyles despise their more powerful kin
Psyscape 115: Vyarnect
Hades 16: Daemonix