It depends- in different books he has different personalitys, mostly though he is mean, cruel and selfish. But Hades had had a hard time in his godboy years; remember that. (Read some greek books, sheesh!)
justin bieber
evil bff of hades
"Dark and morbid" according to Wikipedia.org
Satan.
Because of his personality it was dark and alone and gloomy
Some positive personality traits of Hades include being responsible, loyal, and having a strong sense of justice. He is also known for being determined and protective of his realm.
Hades was not particularly liked by other gods because of his morbid personality, but he got along with them well enough.
they both have a mean personality!
Hades, like all Greek gods and goddesses was given human qualities, and ultimately it is for the individual to recognize these.
In Greek mythology, Hades is typically depicted as being cold, stern, and unyielding. He is often viewed as having a dark and brooding personality due to his role as the ruler of the Underworld. Some may perceive his lack of empathy or emotional warmth as a flaw, as he is not known for his approachability or friendliness.
Hades is often depicted as brooding, stern, and aloof. He is also seen as intelligent, calculating, and possessive over what is his. His personality can vary depending on the interpretation, but these traits are commonly associated with him in Greek mythology.
It is gloomy and strictly ordered as well as a place of dark and mystery - all very human thoughts on death and dying and what lays beyond, and so reflects on Hades, the King of the Underworld.