Clymenus, Polydegmon, and Eubulus were epithets or
Clymenus, Polydegmon, and Eubulus were epithets or euphemisms spoken rather than the name of this deity, who owned Cape Taenarum. He turned a daughter of Oceanus, his nymph lover Leuce, into a white poplar tree, and laid claim to the minerals within the earth. Pirithous got stuck in a chair belonging to this deity, who abducted his eventual wife by tricking her into eating pomegranate seeds. His Helm of Darkness grants its wearer invisibility. For 10 points, name this god who for six months of the year is the husband of Persephone, a brother of Zeus and Poseidon who rules the Greek underworld.
Clymenus, Polydegmon, and Eubulus were epithets or euphemisms spoken rather than the name of this deity, who owned Cape Taenarum.
Hades [accept Pluto until "Greek" is read]