After Zeus has stolen the sacred items from you go see Hercules and he should agree to help you. Then use the magic mirror to teleport both of you to Hades lair.
Hades does not sing any songs in Hercules.
In Disney's "Hercules," Hades can be thwarted by Hercules himself, who ultimately gains the strength and courage to confront the god of the Underworld. With the help of his friends, including Pegasus and Phil, Hercules learns to embrace his true potential. Additionally, the love and support of Megara play a crucial role in motivating Hercules to face Hades and save Mount Olympus. Ultimately, it's Hercules' determination and heroism that lead to Hades' defeat.
Hercules will help you reach the throne rooms of Poseidon and Hades. But you need the Touchscreen Mirror from Aphrodite's test in Poseidon's realm.
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.
You have to get Hercules to help you. But he won't until you have returned the 5 sacred items to the Tree of Immortality. After Zeus steals them, Hercules will help you reach Hades and Poseidon to get their help. You will need the Touchscreen Mirror from Aphrodite's test. (see related question)
Zeus is the father of Hercules, and Hades is the elder brother of Zeus. In short, Hades was the uncle of Hercules.
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.