In all Greek Gods is the potential for both.
Only evil.
Mostly good but some evil as punishment.
He brought Good
Apollo gave evil to humans because he would slaughter them
Aphrodite was to bring both good and evil to humans to show them love and effection but to also break hearts and give undesireable feelings
Good! She gave them each love.
She brings good by giving the humans crops, seasons and a good harvest.
He brings good when he is in a good mood otherwise when he is mad he brings storms and earthquakes who could injure or kill humans.
Poseidon brought good and evil to humans. But one good thing he did while he was in a good mood id build islands for people.
Persephone is a complex figure in Greek mythology. While her abduction to the underworld by Hades may seem like an act of evil, her role as the queen of the underworld also symbolizes the cycle of life, death, and rebirth. Persephone's story reminds us of the balance between light and darkness in the world.
Good, of course.
Both, Artemis could kill or heal (with her arrows) women, as Apollo could (with arrows) kill or heal men.