Darklords Bestiary:
Kraan - flying, leathery beasts, often used as scouts or steed for higher minions.
Giaks - Lowest level thug race of the Darklords.
Drakkarim - There are many human servants of the Darklords, mercenaries, soldiers, people with a cruel bent, etc.
Vordaks - Powerful undead adversaries, the lieutenants and leaders of lower level warriors, powerful mental attacks as well as physical ones.
Helghasts - The most powerful servant, undead, shapeshifters, mega power psionic attacks and usually with defenses, can only be damaged by magical weapons.
These are the ones you are most familiar with. Perhaps you will run into some more. Perhaps you will run into other minions.