who were the gods and goddesses who were considered the chthonic gods
Chthonic Chthonic, a form of khthonie and khthonios, has a precise meaning in Greek; it refers primarily to the manner and method of offering sacrifices to a specific deity or deities, generally referred to as chthonic or chthonian deities. These include, but are perhaps not strictly limited to, Persephone and Hades in classical mythology.