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This is a list of monsters in Etrian Odyssey IV as found in the Monstrous Codex.

For more information, view the monster's page.

Windy Plains[]

Overworld[]

Name First Found Common Drop Rare Drop Conditional Drop
Bounding Beast Windy Plains Kangaroo Fist -- --
Supreme Wing Windy Plains Huge Feather -- --
Pooka Windy Plains -- -- --
Red Pooka Windy Plains -- -- --
Mega Pooka Windy Plains -- -- --
Great Dragon Windy Plains Fire Scale -- Fire Fang

Mazes & Caverns[]

Regular Encounter

Name First Found Common Drop Rare Drop Conditional Drop
Grasseater Old Forest Mine Grasseater Leg Grasseater Jaw --
Roller Old Forest Mine Hard Skin Roller Shell --
Tree Rat Lush Woodlands Rat Fang Rat Hide --
Woodfly Lush Woodlands Gritty Scales Thin Wing --
Angry Baboon Lush Woodlands Baboon Bone -- --
Forest Frog Lush Woodlands Frog Cheek Meet -- Frog Fluid
Mandrake Lush Woodlands Mandrake Root -- Sealed Neck
Ghost Owl Lush Woodlands Soft Plume -- Shocked Talon
Big Roller Lush Woodlands Big Shell Elastic Skin --
Deathstalker Lush Woodlands Needle Tail -- --
Jig Lizard Lush Woodlands Rainbow Skin Rickrack Tongue --
Fanged Vine Lush Woodlands Light Hardwood Writhing Bulb --
Angry Ape Lush Woodlands Ape Bone Ape Hide --
Curse Locust Lush Woodlands Locust Leg Locust Wing --
Flying Beetle Lush Woodlands Beetle Shell -- --

FOE & Bosses

Name Type First Found Common Drop Rare Drop Conditional Drop
Nomad Baboon FOE Old Forest Mine Baboon Skin -- --
Furyfawn FOE Small Orchard Fawn Hide Fawn Hoof --
Furyhorn FOE Small Orchard Fawn Hide -- --
Cutter FOE Lush Woodlands Bear Claw -- --
Bloodbear FOE Lush Woodlands Rending Claw -- --
Desouler FOE Lush Woodlands Desoulder Claw -- --
Baboon King Quest Boss Old Forest Mine Kingly Horn -- Kingly Skin
Healing Roller Boss Old Forest Mine -- -- --
Raging Baboon Quest FOE Old Forest Mine -- -- --
Sand Leviathan Optional Boss Lush Woodlands Sand Horn -- Poison Wing
Berserker King Labyrinth Boss Lush Woodlands Berserker Claw -- Berserker Skin

Gallery

Scarlet Pillars[]

Overworld[]

Name First Found Common Drop Rare Drop Conditional Drop
Dream Eater Scarlet Pillars Cursed Wool -- --
Omnihunter Scarlet Pillars Soft Sickle -- --
Dinogator Scarlet Pillars Dinogator Skin -- --
Storm Emperor Scarlet Pillars Thunder Scale -- Charged Horn

Mazes & Caverns[]

Regular Encounter

Name First Found Common Drop Rare Drop Conditional Drop
Forest Hare Misty Ravine Rabbit Tail Rabbit Ear --
Trip Mushroom Misty Ravine Muddle Hypha Umbrella Lump --
Great Lynx Misty Ravine Mountain Claw -- Sealed Claw
War Bison Misty Ravine Metallic Horn -- --
Petaloid Misty Ravine Dangerous Petal Small Flower Dangerous Bud
Fire Bulb Misty Ravine Fiery Rind Fiery Seed --
Black Claw Misty Ravine Ebony Fur Ebony Claw --
Glutton Vine Misty Ravine Bud Tusk Pliant Vine --
Raging Boar Misty Ravine Boar Tusk Boar Skin --
Hollow Believer Misty Ravine Mist Wand Shard -- Panic Chakra
Largebill Misty Ravine Green Feather Largebill Bone --
Hollow Roamer Misty Ravine Lance Shard -- --
Evilroot Misty Ravine Black Root -- --
Hollow Hoplite Misty Ravine Spear Shard Spear Pole --
Ice Bulb Misty Ravine Ice Rind -- Icy Seed
Thunder Hare Misty Ravine Thunder Tooth -- --
Dark Overseer Misty Ravine -- -- --
Hollow Rambler Misty Ravine -- -- --
Hollow Exile Misty Ravine -- -- --

FOEs & Bosses

Name Type First Found Common Drop Rare Drop Conditional Drop
Greedy Lizard FOE Miasma Forest Lizard Back Fin -- --
Big Moth FOE Moth's Garden Violet Wing -- --
Giant Moa FOE Misty Ravine Moa Beak -- --
Spotted Frog FOE Noisy Marsh Spotted Tongue -- --
Huge Moa FOE Misty Ravine Moa Tendon -- --
Hollow Guard Boss Misty Ravine -- -- --
Hollow Seer Boss Misty Ravine -- -- --
Hollow Queen Labyrinth Boss Misty Ravine Dress Scrap -- Cursed Eye
Iwaoropenelep Boss Moth's Garden Damascus Claw -- Chaos Feather

Gallery

Sacred Mountain[]

Overworld[]

Name First Found Common Drop Rare Drop Conditional Drop
Raging Raptor Sacred Mountains Raptor Wing -- Raptor Claw
Tusked Crusher Sacred Mountains Crusher's Hide -- --
Icy Pincer Sacred Mountains Frigid Sickle -- --
Gold Pooka Sacred Mountains -- -- --
Blizzard King Sacred Mountains Reverse Scale -- Frozen Skin

Mazes & Caves[]

Normal Encounter

Name First Found Common Drop Rare Drop Conditional Drop
Demon Hopper Golden Lair Tough Leg Hopper Wing --
Cave Bat Golden Lair Bat Fang Soft Patagium --
Claw Beetle Golden Lair Hard Shell Beetle Sickle Broken Horn
Maya Owl Golden Lair Shining Rectrix -- Sealed Skull
Magma Spawn Golden Lair Hardened Lava -- Scorch Stone
Magma Spawn Golden Lair Hardened Lava -- --
Glacier Spawn Golden Lair Ice Core Shard -- Frigid Stone
Glacier Spawn Golden Lair Ice Core Shard -- --
Hexroot Golden Lair Withered Vine -- --
Jumping Frog Golden Lair Frog Belly Skin Glassy Eye --
Baboon Golden Lair Thick Bone -- Toxic Bone
Venomshroom Underground Lake Poison Hypha Poison Ferule --
Zapper Frog Golden Lair Zapper Skin Zapper Tongue --
Magma Beast Golden Lair Magma Shard -- Magma Core
Magma Beast Golden Lair Magma Shard -- --
Glacier Beast Golden Lair Melted Core -- Glacier Core
Glacier Beast Golden Lair Melted Core -- --
Cold Claw Golden Lair Cold Skin -- --

FOEs & Bosses

Name Type First Found Common Drop Rare Drop Conditional Drop
Patrol Bat FOE Cramped Nest Giant Wing -- --
Poison Lizard FOE Toxic Cave Poison Trihorn -- --
Plated Chaser FOE Golden Lair Armor Shard -- --
Calm King FOE Golden Lair Thorny Shell -- --
Kibagami Boss Golden Lair -- -- --
Boiling Lizard Labyrinth Boss Golden Lair Fiery Horn -- Effulgent Horn
Scale Boss Golden Lair -- -- --

Gallery

Cloudy Stronghold[]

Overworld[]

Name First Found Common Drop Rare Drop Conditional Drop
Ancient Keeper Cloudy Stronghold Unusual Metal -- --
Guardian Judge Cloudy Stronghold Sintered Body -- --
Death Mantis Cloudy Stronghold Death's Scythe -- Stony Scythe
Sky Emperor Cloudy Stronghold Emperor Feather -- --
Rainbow Pooka Cloudy Stronghold -- -- --
Hraesvelgr Cloudy Stronghold Raptor Beak -- Raptor Talon
Heavenbringer Cloudy Stronghold -- -- --
Bared Essence Cloudy Stronghold Bone Shard -- --
Destroyer Arm Cloudy Stronghold -- -- --
Illusion Arm Cloudy Stronghold -- -- --
Fallen One Cloudy Stronghold Fallen Scale -- Sealed Core

Mazes & Caverns[]

Normal Encounters

Name First Found Common Drop Rare Drop Conditional Drop
Flame Rat Echoing Library Flame Fang -- Flame Tail
Medusa Tree Echoing Library Hard Bark -- Scorched Sap
Peach Crow Echoing Library Peach Feather Peach Leg --
Steel Barb Echoing Library Barbed Needle Barbed Shell --
Flame Lynx Echoing Library Crimson Fur Flame Claw --
Proto-Bot Echoing Library Heavy Iron Ball Mystery Shard --
Purple Anoir Echoing Library Purple Hyoid -- Stunned Tongue
White Ape Echoing Library White Ape Skin -- --
Proto-Hunter Echoing Library Stone Fang Metallic Cord --
Suicide Hare Echoing Library Tiny Tooth Blue Ear --
Eviloid Echoing Library Evil Copal Small Flower --
Cursed Shroom Echoing Library Cursed Hypha -- Sealed Cap
Blue Wallaby Echoing Library Wallaby Fist -- --
Clawed Mole Forgotten Capital Mole Claw Mole Skin --
Dragonfly Forgotten Capital Dragonfly Nest -- Shocked Bug Eye
Venomfly Forgotten Capital Butterfly Wing -- --
Bloody Knuckle Echoing Library Bloody Fist -- --
Volt Cat Echoing Library Sharp Claw -- --
Sleeping Lion Forgotten Capital Lion Claw -- --
Vampire Bat Forgotten Capital Crimson Fang Crimson Wing --
Stun Eryngii Hall of Darkness Eryngii Cap Eryngii Hypha --
Mauler Mole Hall of Darkness Sky Iron Claw -- --
Plated Roller Hall of Darkness Sky Iron Shell -- --
Beetle Lord Hall of Darkness Golden Shell -- --
Wrath Bloom Hall of Darkness Indigo Vine -- Scorched Petal
Hollow Magus Hall of Darkness Staff Shard -- Frozen Heart
Thunder Spawn Hall of Darkness Petal Stone -- --
Thunder Spawn Hall of Darkness Broken Core -- --
Muskoid Hall of Darkness Deathly Vine Small Flower Deathly Bub
King Dragonfly Hall of Darkness Sky Iron Nail Blue Blood --
Gasser Tree Hall of Darkness Writhing Wood Poison Branch --
Red Lion Hall of Darkness Red Lion Hide -- Red Lion Fang

FOEs & Bosses

Name Type First Found Common Drop Rare Drop Conditional Drop
Stalking Shadow FOE South Sanctuary Earthy Skin -- --
Golden Deer FOE Golden Deer Keep Golden Horn -- --
Cold Watchman FOE Echoing Library Spiked Iron Ball -- --
Cruel Slayer FOE Echoing Library Stone Tusk -- --
Silent Killer FOE Echoing Library Killer Blade -- --
Scorching Beast FOE Echoing Library Guardian Shell -- --
Rafflesia FOE Forgotten Capital Giant Petal -- --
Nightmare Ram FOE Hall of Darkness Horrific Breath -- Toxic Eye
Trigourd FOE Hall of Darkness Cursed Femur -- Pumpkin Head
Hexgourd FOE Hall of Darkness Thorny Bone -- Pale Bone
Flygourd FOE Hall of Darkness Cursed Bone -- Cursed Vine
Moth Lord FOE Hall of Darkness Crimson Eye -- Eerie Scales
Chameleon King Boss South Sanctuary Colorful Skin -- Colorful Tongue
Lizard Retainer Boss South Sanctuary -- -- --
Logre Boss Echoing Library -- -- --
Guardian Head Boss Echoing Library Stone Shell -- --
Cradle Guardian Labyrinth Boss Echoing Library Stone Arm -- Dream Carapace
Cursed Prince Labyrinth Boss Echoing Library Drive Gear -- --
Insatiable Pupa Superboss Hall of Darkness -- -- --
Warped Savior Superboss Hall of Darkness Warped Core -- --
Immoral Bud Superboss Hall of Darkness -- -- --
Conceited Bud Superboss Hall of Darkness -- -- --
Cowardice Claw Superboss Hall of Darkness -- -- --
Covetous Claw Superboss Hall of Darkness -- -- --

Full Monstrous Codex[]

Monstrous Codex List
Name First Found Common Drop Rare Drop Conditional Drop
Grasseater Old Forest Mine Grasseater Leg Grasseater Jaw -
Roller Old Forest Mine Hard Skin Roller Shell -
Tree Rat Lush Woodlands Rat Fang Rat Hide -
Woodfly Lush Woodlands Gritty Scales Thin Wing -
Angry Baboon Lush Woodlands Baboon Bone - -
Forest Frog Lush Woodlands Frog Cheek Meet - Frog Fluid
Mandrake Lush Woodlands Mandrake Root - Sealed Neck
Ghost Owl Lush Woodlands Soft Plume - Shocked Talon
Big Roller Lush Woodlands Big Shell Elastic Skin -
Deathstalker Lush Woodlands Needle Tail - -
Jig Lizard Lush Woodlands Rainbow Skin Rickrack Tongue -
Fanged Vine Lush Woodlands Light Hardwood Writhing Bulb -
Forest Hare Misty Ravine Rabbit Tail Rabbit Ear -
Trip Mushroom Misty Ravine Muddle Hypha Umbrella Lump -
Great Lynx Misty Ravine Mountain Claw - Sealed Claw
War Bison Misty Ravine Metallic Horn - -
Petaloid Misty Ravine Dangerous Petal Small Flower Dangerous Bud
Fire Bulb Misty Ravine Fiery Rind Fiery Seed -
Black Claw Misty Ravine Ebony Fur Ebony Claw -
Glutton Vine Misty Ravine Bud Tusk Pliant Vine -
Raging Boar Misty Ravine Boar Tusk Boar Skin -
Hollow Believer Misty Ravine Mist Wand Shard - Panic Chakra
Largebill Misty Ravine Green Feather Largebill Bone -
Hollow Roamer Misty Ravine Lance Shard - -
Demon Hopper Golden Lair Tough Leg Hopper Wing -
Cave Bat Golden Lair Bat Fang Soft Patagium -
Claw Beetle Golden Lair Hard Shell Beetle Sickle Broken Horn
Maya Owl Golden Lair Shining Rectrix - Sealed Skull
Magma Spawn Golden Lair Hardened Lava - Scorch Stone
Magma Spawn Golden Lair Hardened Lava - -
Glacier Spawn Golden Lair Ice Core Shard - Frigid Stone
Glacier Spawn Golden Lair Ice Core Shard - -
Hexroot Golden Lair Withered Vine - -
Jumping Frog Golden Lair Frog Belly Skin Glassy Eye -
Baboon Golden Lair Thick Bone - Toxic Bone
Venomshroom Underground Lake Poison Hypha Poison Ferule -
Zapper Frog Golden Lair Zapper Skin Zapper Tongue -
Flame Rat Echoing Library Flame Fang - Flame Tail
Medusa Tree Echoing Library Hard Bark - Scorched Sap
Peach Crow Echoing Library Peach Feather Peach Leg -
Steel Barb Echoing Library Barbed Needle Barbed Shell -
Flame Lynx Echoing Library Crimson Fur Flame Claw -
Proto-Bot Echoing Library Heavy Iron Ball Mystery Shard -
Purple Anoir Echoing Library Purple Hyoid - Stunned Tongue
White Ape Echoing Library White Ape Skin - -
Proto-Hunter Echoing Library Stone Fang Metallic Cord -
Suicide Hare Echoing Library Tiny Tooth Blue Ear -
Eviloid Echoing Library Evil Copal Small Flower -
Cursed Shroom Echoing Library Cursed Hypha - Sealed Cap
Blue Wallaby Echoing Library Wallaby Fist - -
Clawed Mole Forgotten Capital Mole Claw Mole Skin -
Dragonfly Forgotten Capital Dragonfly Nest - Shocked Bug Eye
Venomfly Forgotten Capital Butterfly Wing - -
Bloody Knuckle Echoing Library Bloody Fist - -
Volt Cat Echoing Library Sharp Claw - -
Magma Beast Golden Lair Magma Shard - Magma Core
Magma Beast Golden Lair Magma Shard - -
Glacier Beast Golden Lair Melted Core - Glacier Core
Glacier Beast Golden Lair Melted Core - -
Cold Claw Golden Lair Cold Skin - -
Evilroot Misty Ravine Black Root - -
Hollow Hoplite Misty Ravine Spear Shard Spear Pole -
Ice Bulb Misty Ravine Ice Rind - Icy Seed
Thunder Hare Misty Ravine Thunder Tooth - -
Angry Ape Lush Woodlands Ape Bone Ape Hide -
Curse Locust Lush Woodlands Locust Leg Locust Wing -
Flying Beetle Lush Woodlands Beetle Shell - -
Sleeping Lion Forgotten Capital Lion Claw - -
Vampire Bat Forgotten Capital Crimson Fang Crimson Wing -
Stun Eryngii Hall of Darkness Eryngii Cap Eryngii Hypha -
Mauler Mole Hall of Darkness Sky Iron Claw - -
Plated Roller Hall of Darkness Sky Iron Shell - -
Beetle Lord Hall of Darkness Golden Shell - -
Wrath Bloom Hall of Darkness Indigo Vine - Scorched Petal
Hollow Magus Hall of Darkness Staff Shard - Frozen Heart
Thunder Spawn Hall of Darkness Petal Stone - -
Thunder Spawn Hall of Darkness Broken Core - -
Muskoid Hall of Darkness Deathly Vine Small Flower Deathly Bub
King Dragonfly Hall of Darkness Sky Iron Nail Blue Blood -
Gasser Tree Hall of Darkness Writhing Wood Poison Branch -
Red Lion Hall of Darkness Red Lion Hide - Red Lion Fang
Nomad Baboon Old Forest Mine Baboon Skin - -
Furyfawn Small Orchard Fawn Hide Fawn Hoof -
Furyhorn Small Orchard Fawn Hide - -
Cutter Lush Woodlands Bear Claw - -
Bloodbear Lush Woodlands Rending Claw - -
Greedy Lizard Miasma Forest Lizard Back Fin - -
Big Moth Moth's Garden Violet Wing - -
Giant Moa Misty Ravine Moa Beak - -
Spotted Frog Noisy Marsh Spotted Tongue - -
Patrol Bat Cramped Nest Giant Wing - -
Poison Lizard Toxic Cave Poison Trihorn - -
Plated Chaser Golden Lair Armor Shard - -
Stalking Shadow South Sanctuary Earthy Skin - -
Golden Deer Golden Deer Keep Golden Horn - -
Cold Watchman Echoing Library Spiked Iron Ball - -
Cruel Slayer Echoing Library Stone Tusk - -
Silent Killer Echoing Library Killer Blade - -
Scorching Beast Echoing Library Guardian Shell - -
Calm King Golden Lair Thorny Shell - -
Huge Moa Misty Ravine Moa Tendon - -
Desouler Lush Woodlands Desoulder Claw - -
Rafflesia Forgotten Capital Giant Petal - -
Nightmare Ram Hall of Darkness Horrific Breath - Toxic Eye
Trigourd Hall of Darkness Cursed Femur - Pumpkin Head
Hexgourd Hall of Darkness Thorny Bone - Pale Bone
Flygourd Hall of Darkness Cursed Bone - Cursed Vine
Moth Lord Hall of Darkness Crimson Eye - Eerie Scales
Bounding Beast Windy Plains Kangaroo Fist - -
Supreme Wing Windy Plains Huge Feather - -
Dream Eater Scarlet Pillars Cursed Wool - -
Omnihunter Scarlet Pillars Soft Sickle - -
Dinogator Scarlet Pillars Dinogator Skin - -
Raging Raptor Sacred Mountains Raptor Wing - Raptor Claw
Tusked Crusher Sacred Mountains Crusher's Hide - -
Icy Pincer Sacred Mountains Frigid Sickle - -
Ancient Keeper Cloudy Stronghold Unusual Metal - -
Guardian Judge Cloudy Stronghold Sintered Body - -
Death Mantis Cloudy Stronghold Death's Scythe - Stony Scythe
Sky Emperor Cloudy Stronghold Emperor Feather - -
Pooka Windy Plains - - -
Red Pooka Windy Plains - - -
Metal Pooka Scarlet Pillars - - -
Gold Pooka Sacred Mountains - - -
Rainbow Pooka Cloudy Stronghold - - -
Drake* Windy Plains Purple Wing - -
Elite Locust* Windy Plains - - -
Evil Locust* Windy Plains Locust Horn - -
Doom Bison* Scarlet Pillars Slender Horn - -
Dark Overseer Misty Ravine - - -
Baboon King Old Forest Mine Kingly Horn - Kingly Skin
Healing Roller Old Forest Mine - - -
Raging Baboon Old Forest Mine - - -
Glacier Fiend* ?? Frigid Core - -
Blade Tortoise* Cloudy Stronghold Shell Spike - -
Chameleon King South Sanctuary Colorful Skin - Colorful Tongue
Lizard Retainer South Sanctuary - - -
Hraesvelgr Cloudy Stronghold Raptor Beak - Raptor Talon
Sand Leviathan Lush Woodlands Sand Horn - Poison Wing
Horned Lion* ?? Black Horn - -
Mega Pooka Windy Plains - - -
Berserker King Lush Woodlands Berserker Claw - Berserker Skin
Hollow Rambler Misty Ravine - - -
Hollow Exile Misty Ravine - - -
Hollow Guard Misty Ravine - - -
Hollow Seer Misty Ravine - - -
Hollow Queen Misty Ravine Dress Scrap - Cursed Eye
Kibagami Golden Lair - - -
Boiling Lizard Golden Lair Fiery Horn - Effulgent Horn
Scale Golden Lair - - -
Logre Echoing Library - - -
Guardian Head Echoing Library Stone Shell - -
Cradle Guardian Echoing Library Stone Arm - Dream Carapace
Cursed Prince Forgotten Capital Drive Gear - -
Heavenbringer Cloudy Stronghold - - -
Bared Essence Cloudy Stronghold Bone Shard - -
Destroyer Arm Cloudy Stronghold - - -
Illusion Arm Cloudy Stronghold - - -
Blizzard King Sacred Mountains Reverse Scale - Frozen Skin
Storm Emperor Scarlet Pillars Thunder Scale - Charged Horn
Great Dragon Windy Plains Fire Scale - Fire Fang
Iwaoropenelep Moth's Garden Damascus Claw - Chaos Feather
Fallen One Cloudy Stronghold Fallen Scale - Sealed Core
Insatiable Pupa Hall of Darkness - - -
Warped Savior Hall of Darkness Warped Core - -
Immoral Bud Hall of Darkness - - -
Conceited Bud Hall of Darkness - - -
Cowardice Claw Hall of Darkness - - -
Covetous Claw Hall of Darkness - - -

*​Unreleased QR Code Monster

Gallery[]


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