Monsters in Frostburn

These monsters are described in Frostburn: Arctic Fox, Branta, Caribou, Chilblain, Dire Polar Bear, Domovoi, Entombed, Frostfell Ghost, Frost Folk, Frost Giant, Glacier Dwarf, Glyptodon, Ice Beast, Icegaunt, Ice Golem, Ice Toad, Ice Weird, Malasynep, Marzanna, Megaloceros, Midgard Dwarf, Neanderthal, Orc, Sea Otter, Penguin, Qorroshi, Giant Raven, Rimefire Eidolon, Rusalka, Seal, Shivhad, Smilodon, Snowcloak, Snow Goblin, Snow Spider, Snow Weird, Spirit Animal, Tlalusk, Uldra, Urskan, Vodyanoi, Walrus, White Pudding, Winterspawn, Woolly Mammoth, Yeti, Yuki-On-Na, Zeuglodon

Monsters in Fiendish Codex II

These monsters are described in Fiendish Codex II: Tyrants of the Nine Hells: Amnizu, Aspect of Asmodeus, Ayperobos Swarm, Aspect of Baalzebul, Aspect of Bel, Aspect of Belial, Black Abishai, Blue Abishai, Brachina, Bueroza, Aspect of Dispater, Dogai, Excruciarch, Falxugon, Aspect of Glasya, Green Abishai, Hellfire Engine, Kalabon, Aspect of Levistus, Malebranche, Aspect of Mammon, Aspect of Mephistopheles, Merregon, Narzugon, Nupperibo, Orthon, Paeliryon, Red Abishai, Spinagon, White Abishai, Xerfilstyx

Monsters in Expedition to the Demonweb Pits

These monsters are described in Expedition to the Demonweb Pits: Abyssal Giant, Cambion, Carnevus, Corrupted by the Abyss, Dabus, Envoy of Lolth, Aspect of Graz’zt, Lamia Noble, Mirror Mephit, Aspect of Obox-Ob, Oculus Demon, Ratatosk, Elder Viper Tree, Aspect of Yeenoghu

Monsters in the Eberron Campaign Setting

These monsters are described in the Eberron Campaign Setting: Ascendant Councilor, Carcass Crab, Clawfoot, Daelkyr, Dedicated Wright Homunculus, Dolgaunt, Dolgrim, Dusk Hag, Expeditious Messenger Homunculus, Fastieth, Furtive Filcher Homunculus, Glidewing, Horrid Animal, Inspired, Iron Defender Homunculus, Karrnathi Skeleton, Karrnathi Zombie, Living Burning Hands, Living Breastplate, Living Cloudkill, Magebred Animal, Tentacle Whip, Tongueworm, Tsucora Quori, Undying Councilor, Undying Soldier, Valenar Riding Horse, Warforged Titan, Zakya Rakshasa