Mecheon
Sacabambaspis
Y'know, I'm probably not going to make any fans with Greyhawk people but this line about neutrality is the actual worst. 'Scales' of good and evil is actually stupid as an idea and the "Team Good vs Team Evil handled with all of the grace of Red vs Blue" is a big part of the reason I think Dragonlance needs to be torn to pieces if it ever gets a reboot.Greyhawk is an epic battle between the forces of Law and Chaos, Good and Evil, but with Neutrality evening the scales whenever it starts to tip too far. These are the things that make Greyhawk different from the Realms and other standard fantasy campaigns.
I would not call this a feature of Greyhawk to advertise but rather one to shove under the dirt