What is Hades relationship with humans?

Answer 1

Hades is the God of the Dead, everyone meets with him eventually.
But in life most people were afraid of Hades. They would pray to him from time to time by banging their head on the ground as they prayed. Or would sacrifice black animals to him. But most of the time they avoided even saying his name.

Answer 2

Hades is the Greek god of the underworld, so his relationship with humans is pretty much non-existent unless you're dead. He's not exactly the life of the party, more like the afterlife of the party. So unless you're looking to hang out in the land of the dead, you probably won't be grabbing a beer with Hades anytime soon.