Heroes of Might and Magic III: The Restoration of Erathia/Creatures

Necropolis

 * Skeletons
 * Skeleton Warriors
 * Walking Dead
 * Zombies
 * Wights
 * Wraiths
 * Vampires
 * Vampire Lords
 * Liches
 * Power Liches
 * Black Knights
 * Death Knights
 * Bone Dragons
 * Ghost Dragons

Inferno

 * Imps
 * Familiars
 * Gogs
 * Magogs
 * Hell Hounds
 * Cerebi (Cerebrus)
 * Demons
 * Horned Demons
 * Pit Fiends
 * Pit Lords
 * Efreeti
 * Efreet Sultans
 * Devils
 * Archdevils

Fortress

 * Gnolls
 * Gnoll Marauders
 * Lizardmen
 * Lizard Warriors
 * Serpent Flys
 * Dragon Flys
 * Basalisks
 * Greater Basalisks
 * Gorgons
 * Mighty Gorgons
 * Wyverns
 * Wyvern Monarchs
 * Hydras
 * Chaos Hydras

Stronghold

 * Goblins
 * Hobgoblins
 * Wolf Riders
 * Wolf Raiders
 * Orcs
 * Orc Chieftains
 * Ogres
 * Ogre Magi
 * Rocs
 * Thunderbirds
 * Cyclops
 * Cyclops Kings
 * Behemoths
 * Ancient Behemoths

Conflux

 * Pixies
 * Sprites
 * Air Elementals
 * Storm Elementals
 * Water Elementals
 * Ice Elementals
 * Fire Elementals
 * Energy Elementals
 * Earth Elementals
 * Magma Elementals
 * Psychic Elementals
 * Magic Elementals
 * Firebirds
 * Pheonixes

Neutral

 * Ammo Carts
 * First Aid Tents
 * Ballistas
 * Peasants
 * Halflings
 * Rogues
 * Boars
 * Nomads
 * Mummies
 * Trolls
 * Sharpshooters
 * Enchanters
 * Faerie Dragons
 * Rust Dragons
 * Crystal Dragons
 * Azure Dragons