Hades' Underworld is called The Underworld.
Zeus did not "send Hades to the Underworld"; just as Zeus rules the heavens, Hades rules the Underworld. According to one of the myths, Zeus selected the Heavens as his realm, and allowed Poseidon to select next because he was eldest. That left Hades (or more accurately Plouton) the Underworld as his realm, which he found suited him just fine.
When he and his brothers (Zeus and Poseidon) were drawing lots to see who would rule where, Hades drew the Underworld and had to go there.
He was not sent there, when he and his brothers defeated the Titans and Cronus, they either played lots, or he was given the Underworld as his due for being the firstborn son of Rhea who was a goddess of the earth.
There was no ruler of the Underworld before Hades.
Hades took control of the Underworld before time existed.
Percy wanted to barter with Hades because his mother was abducted by the Minotaur, that was sent by Hades to destroy Percy. Percy wanted to get his mother back, so he went to the underworld to barter with Hades. However, he was also sent to barter with Hades for the lightning bolt. Hades was accused of possessing the bolt, so Percy was sent to the underworld to get the bolt back.
Hades' Underworld is called The Underworld.
Hades is the God of the Underworld.
Zeus did not "send Hades to the Underworld"; just as Zeus rules the heavens, Hades rules the Underworld. According to one of the myths, Zeus selected the Heavens as his realm, and allowed Poseidon to select next because he was eldest. That left Hades (or more accurately Plouton) the Underworld as his realm, which he found suited him just fine.
When he and his brothers (Zeus and Poseidon) were drawing lots to see who would rule where, Hades drew the Underworld and had to go there.
He was not sent there, when he and his brothers defeated the Titans and Cronus, they either played lots, or he was given the Underworld as his due for being the firstborn son of Rhea who was a goddess of the earth.
Yes, Hades was/is the ruler of the Underworld.
The Underworld was given to Hades as his reign.
Hades is in the Underworld.
No, Hades is not depressed when he enters the Underworld, the Underworld is his home and his domain.
Hades is the god of the underworld.