That list would be so long, that this page would only be able to display 3 comments
The ancient Greek gods were not necessarily good nor evil. They were a part of nature itself combining strong emotions with supernatural powers and immortality. Keeping them happy was to avoid their rage, just like giving lunch money to bullies. When these gods would become angry or jealous, they stole, murdered, raped, maimed and tortured both mankind as well as their fellow gods.
The many tales about the havoc caused by the gods, had the purpose of teaching us morals and values and to reflect on our own destructive capabilities and their consequences (much like religious texts today).
Notorious trouble makers in particular were Zeus, Athena and Apollo.