Siluman Domba Gurun (Desert Sheep Demon)

He is not the actual demon but actually a human, a sorcerer/magician wears the sheep mask & wields the dark/evil magic. He is an enemy of the Indonesian super hero named 'Nusantara' (translated: Archipelago) created by the senior comic creator named Mater, he can merge with his horse to transform into a hideous giant monster resembles a sauropod dinosaur with the bird head like shown in the back.