His temper, and his moodiness.
Because he was a god of the dead.
Yes when he is mad
God of the Underworld.
If you angered him. He would place you in Tarturus.
he could choose where you went after you died
He made Hades a helmet that could make him invisible.
Yes, if he doesn't like you, I mean he's the lord of the dead.
The Greeks didn't make Hades. Hades' parents the Titans Kronus and Rhea made Hades.
The cyclopes made hades his helm of darkness.
The Cyclopes made Hades his Black Crown Of Invisibility
Hades loved her and so sought to make her his wife alone.
Hades has not been known to cause earthquakes; however, Poseidon has.