404 Demon (Pet Simulator X)

404 Demon (Pet Simulator X) is also a feature of Pet Simulator 99.
If you are looking for the Pet Simulator 99 version, click here.

The 404 Demon is a Mythical pet in Pet Simulator X. It can be obtained from the Hacker Egg.

Trivia[]

This pet produces glitching sound effects when equipped.
This is the strongest pet from the Tech World.
This pet is a re-skin of the Demon.

Pets included in the Hacker Egg[]

Hacked Raccoon (91%)
Hacked Cat (4.6%)
Haxigator (3.7%)
Haxolotl (??)
404 Demon (??)

Pet Navigation
Basic
BIG Maskot • Bunny • Dog • Cat • banana • White Bunny • Piggy • Cow • Chicken • Chick • Lamb • Bear • Fox • Monkey • Black Bear • Squirrel • Raccoon • Parrot • Turtle • Green Fish • Blue Fish • Flamingo • Ugly Duckling • Ducky • Gecko • Elephant • Bat • Orange Gecko • Snow Dog • Snow Cat • Deer • Arctic Fox • Walrus • Polar Bear • Penguin • Seal • Snow Squirrel • Snow Leopard • Ice Slime • Puffin • Snow Ram • Desert Cat • Bobcat • Panther • Sand Turtle • Camel • Armadillo • Fire Dog • Fire Cat • Dragon • Hell Bat • Hell Fox • Lava Slime • Froggy • Cyclops • Enchanted Elephant • Enchanted Cat • Purple Cobra • Green Cobra • Crocodile • Goblin • Panda • Axolotl • White Tiger • Cotton Candy Lamb • Rainbow Slime • Rainbow Fish • Skele • Ghost • Reaper • Hell Chick • Hell Rock • Angel Cat • Angel Dog • Cyborg Cat • Cyborg Dog • Cyborg Ducky • Cyborg Panda • Cyber Bunny • Cyber Fox • Toy Mouse • Cat Magician • Ducky Magician • Mining Mole • Reverse Cat • Zombie Bull • Reverse Dog • Zombie Squirrel • Blurred Bear • Bleebo The Alien • Ghost Cat • Gleebo The Alien • Pumpkin Cat • Jelly Alien • Easter Fox • Easter Lamb • Easter Cat • Glitched Dog • Glitched Cat • Blue Marshmallow Chick • Green Marshmallow Chick • Pink Marshmallow Chick • Festive Dog • Festive Cat • Chill Axolotl • Camo Axolotl • Fancy Axolotl • Nature Axolotl • Jolly Penguin • Jolly Husky • Gingerbread Cat • Pixel Cat • Gingerbread Corgi • Pixel Corgi • Pixel Goblin • Reindeer Cat • Reindeer Corgi • Propeller Cat • Fawn • Fluffy Cat • Festive Cardinal • Safety Cat • Present Dog • Present Cat • Doodle Cat • Doodle Corgi • Doodle Snow Leopard • Doodle Snow Ram • Doodle Cow • Doodle Piggy • Doodle Fish • Doodle Flamingo • Doodle Fox • Doodle Tiger • Doodle Elephant • Doodle Fairy • Kawaii Cat • Strawberry Cow • Bread Shiba • Floatie Ducky • Wizard Westie • Scuba Shark • Sandcastle Cat • Detective Terrier • Springy Axolotl • Hot Air Balloon Dog • Parachute Monkey
Rare
Dalmatian • Corgi • Tiger • Goldfish • Shark • Happy Rock • Bull • Frost Dragon • Husky • Lion • Slime • Peacock • Dino • Red Panda • Willow Wisp • Hellhound • Dove • Cyborg Bunny • Cyber Raccoon • Robot • Steampunk Octopus • Steampunk Bat • Steampunk Crocodile • Stacked Cat • Stacked Dog • Zombie Corgi • Blurred Axolotl • Meebo The Alien • Vampire Bat • Astronaut Cat • Alien Arachnid • Glitched Dragon • Chocolate Hippo • Chocolate Frog • Chocolate Dog • Chocolate Bunny • Hacked Raccoon • Festive Dragon • Lumi Axolotl • Axolotuus • Jolly Owl • Cookie Mouse • Pixel Chick • Gingerbread Dragon • Pixel Shark • Pixel Dino • Reindeer Agony • Frost Bear • Garden Cat • Festive Elf • Error Cat • Present Dragon • Doodle Ducky • Doodle Bunny • Doodle Walrus • Doodle Snow Owl • Doodle Lamb • Doodle Turtle • Doodle Raccoon • Doodle Black Bear • Doodle Griffin • Cupid Corgi • Doodle Pegasus • Leprechaun Cat • Mushroom Fox • Piñata Cat • Playful Seal • Floatie Flamingo • Punksky • Beach Ball Monkey • Umbrella Dog • Scuba Dog • Nerd Collie • Ladybug • Sandcastle Dog • Crash Dummy Noob • Rocket Shark • Jetpack Tiger
Epic
Noob • Griffin • Immortuus • Snowman • Icemortuus • Cheerful Yeti • Angry Yeti • Black Widow • Fire Horse • Flamortuus • Dominus Infernus • Dominus Frigidus • Dominus Empyreus • Fairy • Enchanted Deer • King Cobra • Samurai Bull • Cupcake • Shadow Griffin • Hell Spider • Demon • Heavenly Peacock • Cyborg Dragon • Empyrean Snake • Empyrean Stallion • Empyrean Fox • Cyborg Mortuus • Pog Dog • Pog Cat • Pog Dragon • Metal Skull • Happy Computer • Steampunk Wolf • Steampunk Fish • Witch Cat • Blurred Dominus • Nine Eyed Lion • Werewolf • Alien Axolotl • Blue Fluffy • Red Fluffy • Glitched Dominus • Pastel Sock Bear • Pastel Sock Corgi • Pastel Sock Bunny • Hacked Cat • Haxigator • Festive Agony • Midnight Axolotl • Jolly Moose • Hydra Axolotl • Pixel Tiger • Reindeer • Pixel Pink Slime • Frost Axolotl • Demolition Cat • Hydra Cat • Clown Cat • Hoverboard Cat • Scarecrow Cat • Doodle Bee • Doodle Penguin • Doodle Ugly Duckling • Doodle Shark • Doodle Squirrel • Doodle Crocodile • Doodle Lion • Doodle Dragon • Valentine's Cat • Irish Corgi • Flower Panda • Seedling Squirrel • Butterfly Llama • Sailor Narwhal • Error Dog • Basket Bunny • Egg Chick • Piñata Dog • Lucki Cat • Beach Ball Dolphin • Torpedo Shepherd • Robber Pug • Surfboard Corgi • Luau Seal • Luau Cat • Gamer Shiba • Fish in a Bucket • Skateboard Bulldog • Turtle in a Bucket • Plane Dragon • Stunt Cat • Stunt Corgi
Legendary
Kraken • Hydra • Mortuus • Phoenix • Three Headed Dragon • Domortuus • Sphinx • Samurai Dragon • Unicorn • Agony • Hound of Hades • Pegasus • Empyrean Dragon • Cyborg Dominus • Pog Immortuus • Techno Cat • Sophisticated Fox • Mechanical Spider • Stacked Dominus • Blurred Agony • Meebo in a Spaceship • Grim Reaper • Star Surfer • Glitched Unicorn • Glitched Phoenix • Haxolotl • The Easter Bunny • Candycane • Storm Axolotl • Jolly Narwhal • Astral Axolotl • Pixel Dragon • Rudolf • Pixel Wolf • Nutcracker Cat • Balloon Cat • North Pole Wolf • Rich Cat • Hedgehog • North Pole Bunny • Doodle Narwhal • Doodle Chicken • Doodle Axolotl • Doodle Green Cobra • Doodle Sloth • Doodle Lemur • Doodle Unicorn • Love Lion • Clover Fairy • Dino Bear • Chef Monkey • Error Axolotl • Spring Bee • Easter Axolotl • Sombrero Cat • Piñata Monkey • Lucki Monkey • Surfboard Axolotl • Bubble Dog • Firefighter Dalmatian • Pufferfish • Basketball Retriever • Firefly • Flower Gecko • Arcade Cat • Wild Frost Agony • Wild Fire Agony • Lucki Wolf
Mythical
Phantom Wolf • Wyvern of Hades • Angelus • A-36 • M-2 PROTOTYPE • M-6 PROTOTYPE • Blimp Dragon • Dominus Alienus • Ghoul Horse • Alien Parasite • Galaxy Fox • Glitched Immortuus • 404 Demon • Empyrean Axolotl • Hellish Axolotl • Pixel Demon • Sliver Stag • Silver Dragon • Santa Paws • Helicopter Cat • Turkey • Sleigh Cat • Candycane Unicorn • Lucki • Snowflake Pegasus • Mrs. Claws • Lucki Dominus • Doodle Mouse • Doodle Monkey • Doodle Rhino • Doodle Agony • Valentine's Bear • Clover Axolotl • Cupcake Unicorn • Error Dragon • Easter Yeti • Spring Griffin • Sombrero Chihuahua • Sombrero Corgi • Lucki Tiger • Hot Dog • Pineapple Cat • Butterfly • Tiki Dominus • Sun Angelus • Arcade Dog • Fireball Cat • Lucki Agony
Secret
Doodle Parrot • Doodle Dolphin • Doodle Hydra • Clover Unicorn • Masked Owl • Easter Angelus • Sombrero Axolotl • Atomic Corgi • Toilet Cat
Event
Party Cat • Party Dog • Party Pig • Party Dragon • Party Crown Ducky • Party Crown Corgi • Party Crown Elephant • Party Axolotl • Party Tiger • Party Panda • Safari Cat • Comet Agony • Comet Cyclops • Purple Marshmallow Chick • Easter Dominus • Marshmallow Agony • M-10 PROTOTYPE • Scary Cat • Scary Corgi • Elf Dog • Elf Cat • Safari Dog • Party Penguin • Party Squirrel • Party Shark • Sailor Shark • Pirate Parrot • Pirate Panda • Arcade Dragon • Party Monkey
Exclusive
Signature BIG Maskot • Doge • Chest Mimic • Dominus Astra • Blobfish • Electric Slime • Galaxy Dragon • Guest Noob • Mushroom King • Storm Wolf • Hell Chest Mimic • Noobortuus • Domortuus Astra • Pterodactyl • Sock Monkey • Empyrean Agony • Grumpy Cat • Nyan Cat • Nebula Dragon • Blue BIG Maskot • Lava Scorpion • Sad Cat • Galaxy Pegasus • Bladee • Blobenstein • Stacked Doge Noob • Dominus Darkwing • Yee-haw Cat • Sock Corgi • Storm Dragon • Sea Dragon • Sock Cat • Wicked Angelus • Otter • Punkey • Sapphire Phoenix • Keyboard Cat • Nature Dragon • Wicked Empyrean Dragon • Orca • Gargoyle Dragon • Fairy Queen • Rave Crab • Ice Cream Cone • Lucky Cat • Koala • Pony • Storm Agony • Super Corgi • Rainbow Unicorn • Starfall Dragon • Hippomelon • Tiedye Cat • Tiedye Corgi • Tiedye Bear • Tiedye Dragon • Crystal Dog • Crystal Deer • Mosaic Corgi • Mosaic Dove • Mosaic Griffin • Nightfall Wolf • Nightfall Tiger • Nightfall Ram • Nightfall Pegasus • Super Cat • Floppa • Sleipnir • Capybara • Super Capybara • Cyborg Capybara • Prickly Panda • Lightning Bat • Subzero Cat • Inferno Cat • Neon Twilight Wolf • Neon Twilight Cat • Neon Twilight Tiger • Neon Twilight Dragon • Anime Unicorn • Anime Corgi • Anime Monkey • Anime Agony • Grinch Cat • Present Chest Mimic • Balloon Dragon • Balloon Corgi • Balloon Axolotl • Neon Cat • Neon Dog • Neon Griffin • Knife Cat • Clout Cat • Pop Cat • Diamond Cat • Storm Dominus • Empyrean Dominus • Inferno Dominus • Hologram Shark • Hologram Tiger • Hologram Axolotl • Redstone Cat • Emerald Monkey • Amethyst Dragon • Cool Cat • Cool Corgi • Cool Dragon • Jelly Corgi • Jelly Panda • Jelly Pig • Nightmare Spirit • Nightmare Bear • Nightmare Kraken • Hot Dooooog • Atlantean Orca • Atlantean Stingray • Atlantean Dolphin • Mosaic Elephant • Mosaic Lamb • Tiedye Dog • Tiedye Bunny • Tiedye Axolotl • Tiedye Griffin • Stealth Cat • Stealth Dragon • Stealth Bobcat • Exquisite Cat • Exquisite Parrot • Exquisite Elephant • Stunt Chick • Stunt Bobcat • Stunt Unicorn • Cosmic Axolotl • Cosmic Dragon • Cosmic Agony
Huge Pets
Huge Cat • Huge Pumpkin Cat • Huge Pegasus • Huge Festive Cat • Huge Santa Paws • Huge Forest Wyvern • Huge Hacked Cat • Huge Gargoyle Dragon • Huge Dog • Huge Dragon • Huge Cupcake • Huge Lucky Cat • Huge Pony • Huge Storm Agony • Huge Pixel Cat • Huge Super Corgi • Huge Rainbow Unicorn • Huge Easter Cat • Huge Capybara • Huge Tiedye Cat • Huge Tiedye Corgi • Huge Crystal Dog • Huge Mosaic Corgi • Huge Mosaic Griffin • Huge Nightfall Wolf • Huge Nightfall Pegasus • Huge Sleipnir • Huge Floppa • Huge Chest Mimic • Huge Hell Rock • Huge Enchanted Deer • Huge Cyborg Capybara • Huge Party Cat • Huge Skeleton • Huge Cheerful Yeti • Huge Sapphire Phoenix • Huge Techno Cat • Huge Corgi • Huge Ducky • Huge Monkey • Huge Axolotl • Huge Scary Cat • Huge Scary Corgi • Huge Prickly Panda • Huge Inferno Cat • Huge Grim Reaper • Huge Balloon Cat • Huge Blue Balloon Cat • Huge Neon Twilight Wolf • Huge Neon Twilight Dragon • Huge Green Balloon Cat • Huge Scarecrow Cat • Huge Orange Balloon Cat • Huge White Balloon Cat • Huge Lucki • Huge Party Dog • Huge Anime Unicorn • Huge Anime Agony • Huge Elf Cat • Huge Elf Dog • Huge Crowned Cat • Huge Crowned Corgi • Huge Crowned Pegasus • Huge Santa Dragon • Huge Santa Monkey • Huge Reindeer Dog • Huge Reindeer Axolotl • Huge Snowman • Huge Jolly Penguin • Huge Grinch Cat • Huge Mrs. Claws • Huge Present Chest Mimic • Huge Balloon Dragon • Huge Balloon Axolotl • Huge Party Crown Ducky • Huge Dominus Lucki • Huge Samurai Dragon • Huge Unicorn • Huge Doodle Cat • Huge Squirrel • Huge Neon Cat • Huge Neon Griffin • Huge Doodle Fairy • Huge Pterodactyl • Huge Orca • Huge Chameleon • Huge King Cobra • Huge Angelus • Huge Peacock • Huge Party Axolotl • Huge Cupid Corgi • Huge Knife Cat • Huge Pop Cat • Huge Safari Cat • Huge Love Lamb • Huge Meebo in a Spaceship • Huge Diamond Cat • Huge Comet Cyclops • Huge Comet Agony • Huge Storm Dominus • Huge Inferno Dominus • Huge Leprechaun Cat • Huge Clover Unicorn • Huge Clover Dragon • Huge Kawaii Cat • Huge Bread Shiba • Huge Pastel Sock Dragon • Huge Pink Marshmallow Chick • Huge Gleebo The Alien • Huge Hologram Shark • Huge Hologram Axolotl • Huge Chef Cat • Huge Kawaii Dragon • Huge Ninja Axolotl • Huge Goblin • Huge Rainbow Slime • Huge Gecko • Huge Error Cat • Huge Painted Cat • Huge Easter Bunny • Huge Easter Dominus • Huge Marshmallow Agony • Huge Easter Yeti • Huge Pink Balloon Cat • Huge Redstone Cat • Huge Amethyst Dragon • Huge Kraken • Huge M-10 PROTOTYPE • Huge Safari Dog • Huge Piñata Cat • Huge Cool Cat • Huge Jelly Corgi • Huge Jelly Pig • Huge Sombrero Chihuahua • Huge BIG Maskot • Huge Party Penguin • Huge Stealth Dragon • Huge Exquisite Cat • Huge Exquisite Parrot • Huge Chroma Lucki • Huge Chroma Lucky Block Mimic • Huge Tiedye Bunny • Huge Tiedye Axolotl • Huge Mosaic Lamb • Huge Stealth Bobcat • Huge Pixel Corgi • Huge Empyrean Agony • Huge Firefighter Dalmatian • Huge Basketball Retriever • Huge Nightmare Spirit • Huge Nightmare Kraken • Huge Pineapple Cat • Huge Sailor Shark • Huge Pirate Parrot • Huge Gamer Shiba • Huge Tiki Dominus • Huge Butterfly • Huge Pufferfish • Huge Atlantean Orca • Huge Atlantean Dolphin • Huge Luau Cat • Huge Bear • Huge Husky • Huge Fairy • Huge Shadow Griffin • Huge Shark • Huge Sun Angelus • Huge Arcade Cat • Huge Sandcastle Cat • Huge Party Monkey • Huge Wild Fire Agony • Huge Stunt Unicorn • Huge Cosmic Axolotl • Huge Cosmic Agony • Huge Apple Capybara • Huge Lucki Agony • Huge Masked Owl • Huge Happy Rock • Huge Cyborg Dragon • Huge Turtle • Huge Vampire Bat • Huge Pixel Dragon • Huge Tech Chest Mimic • Huge Ghost • Huge Angel Cat
Titanic Pets
Titanic Cat • Titanic Jolly Cat • Titanic Balloon Monkey • Titanic Hippomelon • Titanic Neon Agony • Titanic Red Balloon Cat • Titanic Blue Balloon Cat • Titanic Hubert • Titanic Lucki • Titanic Capybara • Titanic Dominus Astra • Titanic Blobfish • Titanic Hologram Cat • Titanic Banana • Titanic Mystic Corgi • Titanic Jelly Cat • Titanic Tiedye Cat • Titanic Tiedye Dragon • Titanic Nightmare Cat • Titanic Atlantean Jellyfish • Titanic Cosmic Pegasus • Titanic Scary Corgi • Titanic Shadow Griffin