Satan has aspects in the Ancient Greek pantheon that are more than one, simply because you cannot have all identities clearly defined in their maximum perfection in "one" God, since all the Gods are symbolic of metaphysical states, chakras and states of existence.
So if you mix the God of Light with the Sea etc, then people get tremendously confused and cannot delve on one God or one chakra to understand it's essence.
In his lower creative aspect where he creates things, inventions, empires etc, He is Ptah/Hephaistos, and when He is patron of mysteries he is looked upon as Dionysus, to give an example.
These aspects are separated in order for them to be really really clear so that people can do practices after them.