Hades' greatest weakness was most likely his wife, Persephone. He loved her immensely (as much as he'd like to pretend he didn't) and would do anything for her. For example, when Orpheus came to the Underworld to retrieve his wife, Eurydice, it was Persephone who convinced Hades to let Eurydice go.
Another weakness might be Hades' tendency to make sudden, compulsive decisions and act just as thoughtlessly. He also hates to let people leave the Underworld (why else would he have Cerberus drooling at the gates?).
Hades weakness is his wife
Hades' weakness is Persephone.
Hades' weakness is his wife, Persephone.
Hades' weakness is his wife, Persephone.
His weakness is Persephone.
Persephone is Hades' weakness.
Hades' weakness is Persephone.
Persephone is Hades' weakness.
Persephone is Hades' weakness.
Persephone is Hades weakness.
well, i think that hades weakness was that he was passionate over his wife.
Hades' weakness is his wife, Persephone.
Hades' weakness is his wife, Persephone.
Hades' weakness is his wife and queen, Persephone.
I would say Hades' weakness is Persephone.