The following contains spoilers for Fallout, now streaming on Prime Video

Summary

• Radroaches in Fallout are large, aggressive creatures that can threaten humans
• Brahmin are mutated cows with two heads, serve as livestock, and add to the western vibes to the show.
• Gulpers are fierce mutated salamanders, hint at Vault-Tec experiments & tease a possible appearance of Super Mutants in season 2.

The world of Fallout characters who embark onto the surface Lucy, who barely escapes many of her Wasteland creatures encounters.

Although some animals from the present-day landscape like dogs, chickens, and deer have survived in the wastelands, many mutated creatures roam the remnants of the world. This turns an already dangerous world into a brutal landscape. Vault 4's summation that heading into the wastelands is almost certainly a death sentence isn't that far off, given the kinds of natural dangers that stalk the world. Here are the notable game creatures that appear in Prime Video's Fallout series, how they compare to their game inspiration, and how they could tease future elements of the show in a prospective Fallout season 2.

6 Radroaches

Creepy Crawlies With The Size To Back It Up

The Radroaches are among the more common creatures seen in Fallout. In the radioactive landscape of Fallout, the cockroach has thrived. The new species seen throughout the show are far larger and shown eagerly attacking humans when they come across them. One of Lucy's harsh introductions to the surface is an Dogmeat attacking a large Radroach in the second episode of the season. As in the games, the Radroaches are shown to come in a variety of sizes. The smallest can crawl up and across a person, as Maximus discovers when his suit is briefly depowered with him inside it.

In the Fallout games, the Radroaches became a consistent creature encounter after Fallout 3. The Radroaces are far more resistant to radiation than human beings. This means that in the games, their meat could actually be used as a means of treating radiation poisoning. The Fallout games also introduced larger-scale versions of the Radroaches, with Giant Radroaches moving through different parts of the world. The Radroaches are a good visual shorthand for the kind of dangers that exist in the Fallout world. It wouldn't be surprising to see a prospective season 2 of Fallout introduce other variants of the creature.

5 Brahmin

The Two-Headed Cow Is A Solid Easter Egg

The Brahmin are another example of how modern species have been able to adapt to the world of Fallout. For the most part, the lingering animals from the old world are smaller, like chickens and dogs. However, cows have been shown to have mutated into two-headed creatures, with Lucy ing by one while heading towards the town of Filly. The Brahmin are found all across Fallout 4, serving as common livestock for the various traders and settlements that players can come across while exploring the Wasteland. The creatures are among the more docile radioactive creatures that players can encounter.

The Brahmin are treated similarly to cows in the present day, with farmers using their hides for meat and leather. They can even provide healthy milk from their abnormally large udders. Within the Fallout TV show, Brahmin are a subtle and easy way to further the thematic connection between Fallout and Western tropes. In many ways, the show utilizes the imagery and archetypes of Western fiction, and the Branhmin plays into the outpost vibes of Filly. The Brahmin may primarily be an easter egg in Fallout, but it also depends the thematic roots at the heart of the streaming show.

4 The Mutated Gupler

The Gulper Plays A Big Part In Episode 3

In the Fallout universe, Gulpers are a large creature encountered by players in parts of the North American Wasteland. Gulpers are fearsome creatures that can be found in Fallout 4 and Fallout 76. The Gulpers are typically found in watery parts of Maine and Appalachia in the games. The Gulpers are considered a radioactive evolution of salamanders, who have grown significantly in size compared to other creatures in the setting, especially humans. Already a typically large and fearsome creature, the Gulper that appears in the Fallout TV series seems to be a variation on the typical version of the beast.

In the third episode of Fallout season 1, "The Head," a massive mutated Gulper becomes surprisingly important. After swallowing Dr. Siggi Wilzig's head, they all attempt to recover it from the creature and escape with their lives. The creature possesses some human elements, including the incredibly freaky rows of fingers within its mouth. This is implied to be because this Gulper was actually the product of the experiments in Vault 4, which would make this a Gulper/human hybrid. It's possible similar Gulpers escaped from Vault 4 and spread out across the area, adding another fearsome creature to the ecosystem.

3 Vault-Tec Experiments

Super Mutants Could Be Coming In Season 2

One of the more harrowing elements of the ending of Fallout season 1 is the reveal that Vault-Tec not only initiated the nuclear war that wiped out much of the Earth, but they also planned ahead with different experimental Vault-Tec Vaults. Vault 4 is one where human experimentation is embraced as a means of advancing humanity. The show later showcases these experiments. While some are largely human (albeit with some specific mutations), others are far more animalistic and savage. There's even an implication that the Mutant Geko encountered in the show hailed from Vault 4.

Fallout hints other experiments are still conducted by Vault-Tec. In "The Target," Dr. Siggi Wilzig notices a mysterious creature being wheeled down a walkway with a large and clawed arm sticking out from under the sheet. This could be a hint that Fallout's Super Mutants will play a part in the TV universe. In the Fallout games, Super Mutants were created by human experimentation with the Forced Evolutionary Virus mutagen. The tease that scientists could be working on Super Mutants is one of the show's best indicators that those creatures might appear in future episodes.

2 Yao Guai

How Bears Survived In The World Of Fallout

In the Fallout games, the Yao Guai are a nightmarish evolution of bears. Mutated by the Wasteland's radioactive fallout, the Yao Guai are considered some of the most dangerous creatures players can encounter. Their jaws are strong enough to tear through flesh with ease. Meanwhile, their claws tears through the largely impressive t-60 Power Armor, scratching it. This carries over into the Yao Guai that appears in the Prime Video television series, which is largely similar to how the creatures are portrayed in the games. Brotherhood of Steel Maximus and Titus encounter a Yao Guai while looking for Wilzig.

The Yao Guai quickly defeats Titus and almost kills him before Maximus is able to land a headshot on the creature. This is probably the biggest deviation from the game Yao Guai, as they are typically far more fearsome and formidable enemies, that require a greater deal of effort to put down instead of one well-placed bullet. The Yao Guai is a dark example of how evolution has adapted to the expansive radioactive wasteland, with the Yao Guai spreading to many different locations around the continent. This clearly includes the Southern California ruins that serve as the Fallout show's setting.

1 Ghouls

Fallout's Version Of Zombies Are Terrifying & Tragic

Feral Ghouls are a prominent creature in the Fallout series, the end state for radiated people in the Wastelands. Exposure to nuclear fallout can transform a person into a Ghoul. This can come in minor doses in radiated medicines or sustenance. Exposure to a nuclear blast can quickly transform any survivors into skeletal Feral Ghouls. Ghouls steadily lose their skin and suffer from a form of necrosis, with many of them eventually losing their nose, ears, and hair. What makes Ghouls particularly haunting is their former humanity, which will eventually fail them and leave them Feral creatures.

In the Fallout games, there were several Ghoul characters who could be befriended or confronted. Notably, players are not given the opportunity to play as a Ghoul in the games. While there are some perks to this irradiated state, it's a double-edged sword. Ghouls possess enhanced healing and an extended lifespan. The man formerly known as Cooper Howard has been alive for over two hundred years because of his status as a Ghoul. Thaddeus also exhibits the potential of a Ghoul after he's exposed to a radioactive "cure" by the Snake Oil Salesman, quickly healing from an otherwise fatal arrow to the neck. However, Ghouls steadily lose themselves to the radiation — both physically and mentally.

Ghouls lose their humanity over time, transforming into ferocious and feral cannibalistic creatures. Feral Ghouls are a dangerous threat, especially in close quarters. Lucy gets to see this up close when she's forced to kill an attacking Feral Ghoul. The effects can take days or years, depending on the severity of exposure. There are also means to combat the transformation into a full Ghoul, as seen with Cooper Howard. In the TV series, he's able to use specific medicines to combat his increased transformation into a Feral Ghoul. However, this fate seems to be inevitable for all Ghouls in Fallout.