They could be both.
Chat with our AI personalities
he was nice to his favorite people and gods and cruel to the people and gods he hated.
Well Zeus was nice to most gods but to some who didn't worship him not so much
Zeus is Jupiter, Jupiter is his Roman name he is the king of gods and HE can be mad at times or he can be nice depends on what he is dealing with.
He could be both, as could all gods of the Greeks.
Greek and Roman gods are myths