UNDEAD

Mummy

The Monsters Know What They're Doing     Dungeons And Dragons original/official source

Monstrosities     Swords & Wizardry original/official source

Angry Golem (web)     D&D 5e original/official source

OSE Encounter Activity Tables     Any original/official source

Pathfinder 1e Bestiary 1     Pathfinder original/official source

Pathfinder 2e Bestiary 2     Pathfinder original/official source

Classic Horrors Revisited     Pathfinder original/official source

Exotic Encounters     Pathfinder original/official source

Mythic Adventures     Pathfinder original/official source

Tome Of Horrors 2020     D&D 5e original/official source

Flee, Mortals     D&D 5e (no source link)

Monster Ecology Anthology     D&D 5e (no source link)

Monster Manual     D&D 4e (no source link)

Dungeons And Dragons Essentials: Monster Vault     D&D 4e (no source link)

Dragon Magazine     D&D 2e/3e (no source link)

D&D 2e Monstrous Manual     D&D 2e (no source link)

Scruffy Grognard's Monstrous Manual     D&D 2e (no source link)

AD&D Monster Manual     AD&D 1e (no source link)

Dragonlance Bestiary     SAGA (no source link)

Hacklopedia Of Beasts Vol 5     Hackmaster original/official source

Monsters Compendium     Heroes Of Adventure (no source link)

Mystara Adversary Compendium I     Dragon Age original/official source

Monsters And Treasure (2019)     Castles And Crusades original/official source

The Monster Overhaul     OSR (no source link)

Adventures Dark And Deep     Adventures Dark And Deep (no source link)

Abnormal Undead     Any original/official source