DEVIL

Imp

Dracopedia Bestiary: An Artist's Guide     Any original/official source

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

Pathfinder 1e Bestiary 1     Pathfinder original/official source

Pathfinder 2e Bestiary 1     Pathfinder (no source link)

All Sorts Of Critters (web)     Pathfinder original/official source

Fantastical Creatures     Pathfinder original/official source

Talented Bestiary     Pathfinder original/official source

Monster Monday (web)     D&D 5e original/official source

MojoBob (web)     D&D 2e original/official source

D&D 2e Monstrous Manual     D&D 2e original/official source

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

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

Fiend Factory     AD&D 1e (no source link)

Dragonlance Bestiary     SAGA (no source link)

Hacklopedia Of Beasts     Hackmaster original/official source

Monsters Compendium     Heroes Of Adventure (no source link)

Monster Guide     World Of Warcraft RPG original/official source

Frost And Fur     d20 original/official source

Dyval: Hell Unleashed     Rifts (no source link)

Fantasy Age Bestiary     Fantasy Age original/official source

Beyond The Black Sea Bestiary     Beyond The Black Sea (Dark Stars) original/official source

Creature Feature Quarterly