Hades does not sing any songs in Hercules.
At the same time as collecting Cerberus, he asked Hades for Theseus who had been entrapped there, he was also described as battling Hades for the life of Queen Alcestis, who had agreed to die in place of her husband Admetos. Hades was wounded by Hercules during his seige of the town of Pylos.
In the Disney movie it is Hades
In Greek mythology Hades does not plot against Hercules, but aids him.
Hades and Hercules had a complicated relationship; but Hades seemed to favor Hercules, for he allowed the taking of Perseus and Cerberus from his realm by Hades.
Hercules
Zeus is the father of Hercules, and Hades is the elder brother of Zeus. In short, Hades was the uncle of Hercules.
no it has hades gods and Hercules parents
Hades often aided Hercules in Greek mythology; allowing Hercules to take Cerberus, and to take two people from the realm and up to earth.
Hades and Zeus are brothers; Hercules is a son of Zeus and, as such, a nephew of Hades.
Hercules saved Theseus the king of athens
because Hercules broke in and out of the underworld alive