I'm fascinated by gargoyles since i was 6 years old. Ironicly i had my own gargoyle in mind, blue, long sea-gull like wings, white hair. It used to look more humanoid and skinnier, but now is more badass and handsome.

Original species: http://gargwiki.net/Gargoyle

Biology:

• Demonic gargoyles used to be the regular gargoyles, but corrupted by dark magic, which the sorcerers in rome made them able to fly, breathe fire and having immortality. But that made them vulnerable to be killed by superstision of people, hating demons and such, so they were very little left. They still have the natural behaviour of sticking to other gargoyles and forming clans for better survival, but that made them an outcast even for other gargoyles, since they arent usually magical at all. Demonic gargoyles are not only immune to cold temperatures but also to hot temperatures, surviving fires and even molten rock. They breathe green fire but cannot cast it.

Biography:
-Lividus was given the name by a sorcerer when he hatched, meaning "blue" his natural body pigment. He was trained to fight and was tested his flight and endurance underground the city. Making him a formidable assassin. After the sorcered has died from old age, Lividus decided to have his own path in the misty mountains north of ancient's rome. Wasn't found by anyone since. Maybe he is exploring the modern cities out of curiosity. Avoiding of being spotted, being cauteous not afraid.

PS: im not english native, so I aplogice for my poor grammar, you can correct me tho! I'd really appreciate it