Characters / Undead Unluck: The Rules

Undead Unluck Main Character Index
Negators (Undead and Unluck, The Union, Under)
The Rules (God and the Superior Rules)
Others

The Rules

The rules that govern Earth, embodied by otherworldly creatures known as UMA. These rules are imposed by the God that created Earth in order to make the humans inhabiting it suffer.

Beware of unmarked spoilers

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Apocalypse

Apocalypse

Voiced by: Tomokazu Sugita (JP), Mick Lauer (EN)

"Let the quest begin."

The first artifact discovered by humans, a sentient, talking book who gives missions to the Union.

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• Books That Bite: Bites off Andy's hands when he tries to forcibly open Apocalypse for some reason.
• Even Evil Has Standards: Apocalypse gets pissed at UMA Move for interfering in a quest the Union was about to complete because it felt Andy vs UMA Sick was too lopsided in Andy's favor to be interesting. It even counts the quest as completed and gives the Union the quest's reward, grumbling it's not rotten enough to penalize them over it since Move teleported Sick back to the Master Room and made it impossible to complete the quest.
• I'll Never Tell You What I'm Telling You!: He refuses to tell the Union how to beat Summer once it goes stage two... and then tells them anyway when Mui unintentionally uses Untruth on it.
• Mouth of Sauron: The god responsible for creating the world lies on the other side of Apocalypse, the book simply being its mouthpiece.
• Pet the Dog: As noted above, Apocalypse still counted the Sick quest as completed and gave them the reward despite the fact the Union wasn't able to complete the quest because of Move's interference. It's heavily implied he could have just as easily penalized the Union over the failure, since he heavily insists that he was simply making a fair judgement considering the circumstances and that the choice was made not because he's trying to join their side.
• Quest Giver: Requires the Union to complete a series of quests, usually involving the capture or death of an UMA or another Negator. Failing to clear all of the given quests in the allotted time results in more rules being added to the world and more UMAs being released. It's also happy to give out additional information like the relative difficulty of each quest. Chapter 138 reveals the quests and their rewards are randomized, as the quests shown are much different from the previous loop's quests.
• Reality Warper: Can do things like retroactively change all languages to English with no issue and move time forward.
• Sensory Overload: He can do this to those who are touching him by funneling visions of the past into their mind. Since he's older than any other artifact, the sheer volume of the visions he can bestow is enough to almost drive someone crazy and only Phil can safely grab it.
• Tome of Eldritch Lore: An otherworldly book that can summon monsters from another dimension.
• Tsundere: He's implied to be a non-romantic one toward Juiz as she reveals she often had conversations with him throughout the loops to where she considered him a friend of sorts. Despite Apocalypse's insistence otherwise, Fuuko suspects forcing her to choose between neutralizing two Master Rules or the Revolution penalty is as much invoking God's will as it is his own way of preventing Juiz from fighting, which is made more conspicuous by him giving these quests right after learning the Union has a new lead on her reincarnated self's whereabouts.
• Villainous Breakdown: It's left frustrated as Fuuko keeps passing the quests for her gambit to have Nico, Gina, and Ichico safe for the 2000s by abusing the passing penalty to move time forward by 26 years, cursing when Fuuko finally accepts the quests for the rewards (a third seat and the artifact Remember) in her favor.

UMA

In General

• Always Chaotic Evil: Ziggzagged. The only childhood memory all UMAs share is God ordering them to make humans suffer by reinforcing their rule, a command the vast majority of UMA are happy to oblige. However, UMA can grow out of this mindset with time and some even develop their own goals and interests separate of what God intended for them. Some, like Move and Burn, can be even wrangled into helping humans instead of hurting them with the right motivation in place. Meanwhile, Spring despite being a quest UMA turns people into cherry blossom trees but otherwise doesn't go out of its way to torment humans and seems to want friends. God ends up forcing the UMA to transform into a state more willing to attack humans.
• Anthropomorphic Personification: UMAs are physical representations of the world's rules, such as decay (Spoil), movement (Move), race, sickness, and sex, to name a few.
• Eldritch Abomination: Played With. While they are bizarre, otherworldly creatures, they don't defy the rules of reality. Rather, they are those rules.
• Geas: Being the Anthropomorphic Personification of universal laws (and being essentially enemy pieces crafted in a divine game played by Jerkass Gods), people who find themselves within their vicinity are subjected to a form of affliction related to their concept, an affliction that can either be activated or negated depending on the person's mindset or actions.
• Mook Maker: UMA can create offspring, dubbed "Juniors" by the Union, when they enforce their rule, though these creatures aren't always loyal to their UMA creator. Examples include Spoil's zombies and Autumn's spiders.
• Our Cryptids Are More Mysterious:
  • Each UMA is an otherworldly being that represents a specific "law" that it adds to the world. For example, UMA Spoil has various decay-based powers, and, according to him at least, things didn't start to decay at all until he appeared.
  • UMA's also come in two different classes; Phenomenon-types like Spoil and Burn, and Concept-types like the Season UMAs. Concept UMA are implied to be more powerful then Phenomenon UMA, as Concept UMA represent wider ideas while Phenomenon UMA represent a single thing. Concept UMA are also said to be God's favorites.
  • A third class of UMA’s called Master Rules are revealed in later chapters. Master Rules UMA are UMA that are added to the world automatically from the beginning, such as Sickness and in the last loop, Galaxy. Master Rule UMA are the strongest of the UMA, with even a whole team of Negators having trouble fighting just one.
• Poor Man's Substitute: An In-Universe case. Some of the UMA overlap in their abilities or concepts to an extent so that when killing 3 of the 4 season UMAs result in the Earth floating towards the sun, the Union seek out various UMA to fulfill the same roles. What truly makes it this trope is that despite fully accomplishing their goal in capturing the necessary UMA, this only slows the worst case scenario by five percent showing despite the greater number of UMA, they can't fill the same roles.
• Sequential Boss: All UMA are said to have 3 total forms, starting off in a weak core form upon their creation, advancing to significantly stronger and larger form known as their first phase, and then peaking with an even stronger and larger second phase as their final form, the evolution triggering as they reinforce their rule on the world. Spring seemingly breaks this rule when it evolves into a third phase during its conversation with Fuuko, shocking the Union's scientists. However, Clothes reveals this phase was forced upon it by God because Spring wasn't using its full power. The 101st loop reveals that the seated Master Rules are capable of achieving a third phase voluntarily, which is first demonstrated with Beast.
• Sleep-Mode Size: UMA that get defeated but not killed are reduced to a powerless "core", a small sphere with their facial features on it.

Clothes

UMA Clothes (Clothy)

Voiced by: Jun Fukushima (JP), Derek Stephen Prince (EN)

Clothy as Andy's tie

"Geez, that Undead sure can work a UMA to the freakin' bone.

An UMA that represents the concept of clothing. It was captured by the Union a long time ago but escaped its cell, eventually ending up as Andy's Union uniform.

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• Didn't Think This Through: Gleefully helps Fuuko afflict Andy with Unluck by opening a hole in Andy's suit during their trip to Rio de Janeiro, only realizing that it would be affected as well simply by being Andy's clothing seconds before both are hit by a truck, launched into the ocean, and chowed down on by a nearby shark.
• Exact Words: By its rules, Clothes can turn into any outfit the user desires. This means it can turn to things such as a life jacket, a watch, a Union emblem, and a climbing harness since they all technically are wearable items.
• In-Series Nickname: Fuuko calls it "Clothy", which Andy also later uses.
• Living Clothes: It's a living garment that takes the form of the wearer's desired clothing. It ends up becoming Andy's uniform because it's the only clothing that can survive everything Andy goes through.
• Logical Weakness: It can only take control of someone after it has satisfied their desire. Since Andy's desire is so insatiable, it can't actually take control of him. He's even able to get Clothes to go with Fuuko without possessing her by saying it's how it can be clothes that benefit him.
• Made of Iron: As a consequence of Andy's desire for clothes that regenerate with him, Clothes goes through just about everything Andy goes through and comes out no worse for wear.
• Puppeteer Parasite: Latches onto humans to take control of their bodies.
• Took a Level in Kindness: Early on it only acted as Andy's suit out of its desire to eventually take control of him and greatly enjoyed watching him struggle against other UMA like Spoil. By the time of the Spring Arc however, it becomes a lot more cooperative and helpful, even separating from Andy to help Fuuko after she goes to Under as a willing hostage, though it claims to be doing this simply to please Andy and become his desired clothing. However, Clothes does seem happy about Fuuko loving it and also refers to her by name afterwards, which it doesn't do with Andy. It even explains to Fuuko why Spring gained a third form.
• Trademark Favorite Food: According to chapter 21, its favorite food is balls of yarn.
• Your Heart's Desire: Creates the clothing that the host desires most. Once the host is bewitched by the garments, it takes control of their body. It can't control Andy because Andy's demands are too high.

Move

UMA Move

Voiced by: Shota Yamamoto (JP), Bill Butts (EN)

"Juiz... I've done my part in transporting you all. Now I expect to see quite the show..."

An UMA that represents the concept of movement. It's been tamed by the Union and acts as their transportation.

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• Chess Motifs: Less chess and more a general board game motif. Its head is shaped like a ten-sided die and its body is covered in what appears to be board game spaces and pieces.
• Monster Allies: It's been tamed by the Union and seems to be loyal to Juiz in particular. Interestingly, it also seems to follow Fuuko's orders as well by the 101st loop after she becomes the new leader of the Union.
• In Love with Your Carnage: His reason for assisting the Union seems to be steeped in this. For example, after warping the Union members to the surface after UMA Galaxy's release, it tells Juiz that it expects to see "quite the show" as payment for doing so, implying that it enjoys watching Juiz use her power on others. It's implied a similar case is why it also follows Fuuko's orders, since her powers can cause massive damage.
• It Amused Me: It's revealed the whole reason it helps the Union is because it enjoys watching people with only one life to live fight to survive. Which is why it helps out UMA Sick when Andy fights it, as Andy is too overpowered against Sick's powerset.
• Sweet Tooth: Implied. The 101st loop shows Move drinking soda twice, which implies the UMA enjoys doing so and it is even enjoying soda and popcorn while watching Andy and Sick fight.
• Thinking Up Portals: It can warp anyone anywhere by creating cracks in reality that it can move through.

Spoil

UMA Spoil

^{Click here to see his second phase}

^{Click here to see his core}

"Why do you oppose me? To be born... to spoil... to return to the earth... it is a thing of beauty. How can you not see that?!"

An UMA that represents the concept of spoiling and decay. Andy, Fuuko, and Shen are sent to capture him as part of one of Apocalypse's quests.

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• Arc Villain: The titular antagonist of the Spoil Arc, though he gets usurped by Victor in the last few chapters.
• Bishōnen Line: Goes from a hulking beats with an Eyeless Face and gaping maw in his first form to a more humanoid figure with a smaller mouth, an actual eye, and hair-like sludge in his second form.
• Boxed Crook: Juiz forces him to battle Burn when she confronts Under's Leader in the arctic, lest he wish to die by her hands .
• Curb-Stomp Battle:
  • Once Shen starts using his negation and breaks out the Nyoi-Kinko Staff, Spoil can do little more than take hits and whine about Shen's power.
  • He's also no match for Victor, who absolutely brutalizes Spoil in a matter of seconds with little thought.
• Cyclops: In his core and second form, he only has one eye.
• Death's Hourglass: Humans affected by Spoil have a series of numbers appear on their abdomen that slowly goes down. Once the number reaches zero, they turn into zombies.
• Devour the Dragon: He inhales and devours several of his zombies in order to transform into his second form.
• Disintegrator Ray: In his second form, he can shoot a "Disintegration Beam" from his finger that disintegrates whatever it hits instantly.
• Eyeless Face: Has this in his first form.
• Hero Killer: Visions reveal Spoil killed members of the Union in previous loops' version of the Spoil quest, which is likely why Juiz planned to skip doing the Spoil quest in the 100th loop.
• Immunity Attrition: His Spoil Field can decay faster than Andy can regenerate, making it difficult for Andy to fight him. Victor on the other hand...
• "Instant Death" Radius: As an UMA, he has a natural range in which he can impose his rule. Anyone who enters Spoil's range is at risk of being cursed to rot into a zombie. In his second form, he has a Spoil Field that surrounds his body that causes any human who enters to instantly begin decaying, with no time to ward off the curse.
• Living Statue: Spoil took the form of an angel statue in Longing's cathedral to hide his presence, with the statue becoming part of his face when he did finally emerge.
• Logical Weakness:
  • Spoiling occurs due to bacteria in the air, and the bacteria need moisture to fuel the process. This means that in an environment without moisture he's almost completely powerless.
  • His deadly disintegration beam is completely ineffective against things that just can't spoil, like fire as seen in his fight with UMA Burn.
• Make Them Rot: His main power is causing things to rot away into nothing. He can do this to non-living things in an instant, but its a bit harder to do for humans.
• Mook Maker: He turns people into zombies, though they aren't particularly loyal to him.
• Necessarily Evil: He gives Fuuko a lengthy speech about how before he came to be, the world was stagnant and ugly. His birth brought a change in the form of decay, which made humans stop taking their lives for granted. He argues that he's ultimately this trope and that humans are the only creatures who reject him.
• Sequential Boss: He's fought in two forms. His first is a giant, hulking monster that attacked mainly with swipes and slaps. His second form is a bit more humanoid, possesses large wings, and gave him access to a ranged attack.
• Villainous Breakdown: As Shen begins to overpower him with his Magic Staff and Untruth ability, Spoil grows more and more frustrated until he eventually devolves into angrily shouting about how he refuses to believe that a mere "glitch in the system" could possibly be so powerful.
• Winged Humanoid: He grows wings in his second form, which is much more humanoid than the first.

Galaxy

UMA Galaxy

An UMA that represents the concept of the galaxy, including stars, planets, and even aliens. It was added to the world as a penalty due to the Union failing to capture Unseen.

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• Celestial Body: It's body is like a window into space itself, with various celestial bodies and phenomena visible throughout its form.
• Small Role, Big Impact: As a character, Galaxy is extremely minimal, never speaking or interacting with any other character in the story. However, it's addition inunverse leads to Earth nearly being destroyed by Aliens while also bringing it one step closer to Ragnarøk.
• Took a Level in Badass: Downplayed. After being a simple penalty UMA in the 100th loop, it's upgraded to a Master Rule for the 101st, though it hasn't had a chance to flex its heightened power due to being off-planet.
• The Unfought: It's one of the few UMA in the series that's never directly faced as it resides somewhere out in space rather than on Earth like most UMA.

Burn

UMA Burn

An UMA that represents the concept of burning. It was captured by the Union as a part of Apocalypse's quest, but later escaped due to Under's interference.

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• Chekhov's Gunman: It was first teased in Chapter 9 where its capture was one of the six quests given to the Union, and it was later confirmed in Chapter 19 that the Union had successfully succeeded in capturing it offscreen. It ends up becoming a major character in Chapter 32, where it breaks free from it's containment and assists Under in their attempt at stealing the roundtable.
• Dynamic Entry: Pulls one off at the end of Chapter 31, where it suddenly bursts from beneath the roundtable meeting room, sending the roundtable members backwards to avoid its flames as it picks up the table itself to take with it.
• Flaming Hair: It has a ferocious mane of fire.
• Hidden Depths: While it looks like nothing more than a roaring brute, its motive for assisting Under, being its desire to meet its creator at least once, shows that it's an introspective being as well.
• Intelligible Unintelligible: It speaks solely in roars and in growls that only other UMA can seem to understand, such as Spoil.
• Impaled with Extreme Prejudice: In order to halt his escape in chapter 33, Mico and the other Union scientists fire a giant unbreakable pillar through its chest.
• Living Lava: As the representation of the concept of burning, it's a giant beast made of lava that is constantly engulfed in flames.
• Monster Allies: Has allied itself with Under after being freed from the Union's holding by them.
• Mundane Utility: Billy uses Burn's core as a campfire while keeping watch on UMA Winter.

Autumn

UMA Autumn

^{Click here to see her second form}

"Keh keh. Boring. Give me. Give me. Give me a story that's truly interesting. Tell me. Tell me. Tell me a story no one knows. Show me. Show me. Show me a story... That's yours alone!!"

An UMA that represents the concept of the Autumn season. She resides near Stanley Park, Vancouver, where she hunts down humans in her search for a good story to read.

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• Big Creepy-Crawlies: She's a giant insectoid creature with pincers and an exoskeleton.
• Bishōnen Line: Her first form is an insectoid monster with her six eyes visible and a large gaping mouth, while her stronger second form looks like a shapely armored humanoid female with the eyes closed and a human-like mouth
• Devour the Dragon: She absorbs her army of Spiderlings in order to transform into her second form.
• Extra Eyes: Has six eyes in total, which she can cover with bone to protect them.
• Giant Spider: Her Juniors are giant, skeletal spiders that collect humans for her.
• Healing Factor: She possesses an incredibly strong regeneration ability that makes it difficult to sustain meaningful damage on her. This necessitates Rip and the rest of Under to assist Fuuko and Andy in order to beat it and Fuuko decides Gina is their best chance of slaying Autumn in one shot with Unchange.
• Life Drinker: An UMA that feeds on human life by turning humans into books, reading them and then consuming them whole.
• Make My Monster Grow: While she already towered over the protagonists initially, she grows even larger during her battle with the Union and Under.
• Nightmare Face: In her first form, her head is shaped like a human skull, she lacks lips which makes her monstrously wide jaw all the more noticeable, and she has three pairs of eyes that can move independently of each other. She's definitely not a pretty sight to see, though her face in her second form is much less disturbing.
• No-Sell: Her exoskeleton is so sturdy that it tanks Andy's strongest attack, "Crimson Bullet," with ease. Even Anno's stronger "Volcano Bullet," which managed to at least crack her armor, left her unfazed overall.
• Single-Stroke Battle: On the receiving end once the 101st loop Gina learns the secret to Unchange from her past self, where she channels Unchange with her weaponized beret to create a huge invisible sword that cleaves the UMA in half.
• Stealth Pun: Her abilities are based on the Japanese concept that autumn is the season for reading, popularized by Natsume Souseki's Sanshiro.
• Transformation Ray: Anything stabbed with her pincer turns into a book for her to read and also turn into Juniors. It's implied because of the latter that Fuuko can't use Unluck on Autumn without the risk of killing bystanders as collateral damage.
• Verbal Tic: Repeats the beginning of all of her sentences three times.
• Visual Pun: An almost literal "book worm".
• Wake-Up Call Boss: Serves as this to Andy and Fuuko early in the Autumn Arc. None of their tricks can touch her and their inability to properly hurt her leads to them retreating and training with Anno to broaden their abilities.
  • Interestingly serves as this twice due to reappearing in the 101st loop in a random quest without the other 3 seasons. Fuuko is uncertain that they would win in the Union's current state with her abilities and taking six negators to defeat her last time, so she has the current Gina learn the secret to using Unchange at its full potential by having her enter her book and interacting with the memory 100th loop Gina. Gina then proceeds to neutralize Autumn with one strike.

Winter

UMA Winter

An UMA that represents the concept of the Winter season. It resides at Mount Ararat in Turkey.

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• An Ice Person: Fittingly exaggerated as the representation of the concept of Winter and all things cold; it's literally a giant chunk of floating ice.
• Elemental Rock-Paper-Scissors: Being a being made of ice, fire is an obvious weakness for it, which is why Under have Burn by their side when facing it. Indeed, Burn makes short work of Winter after Fuuko hands herself over to get Under to stop the Enless Winter caused by Summer's death.
• Endless Winter: After Summer is killed, the lack of a counter balance allows Winter to throw the world into an endless ice age.
• Hostage Situation: Is put in one by Under as a ploy to barter with the Union. Their leader and Tella posted up near Winter with Burn by their side, planning to wait until all the other Season UMA were neutralized/caught and then threaten to kill it themselves lest Union comply with their demands. They end up using it to get Fuuko to come with them to their base willingly.
• Single-Stroke Battle: Burn rips it in half immediately after Billy tells him to.
• Sinister Geometry: It's a giant polygonal creature that floats silently in the skies of Mount Ararat. Even when Under and the Union are battling near it, it does nothing but continue floating in ominous silence.
• We Hardly Knew Ya: Unlike the other three seasons, Winter only gets a few pages of appearance at most before being promptly killed by Burn to keep Earth from freezing over.

Summer

UMA Summer

^{Click here to see its first form}

^{Click here to see its second form}

A miniature, spherical UMA that represents the concept of the Summer season. It and its junior subbodies appears in places that have a surplus of gunpowder and fuel, such as gas stations and firework sellers, which they seeks to consume and grow stronger. The Union discover it in Taiwan.

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• Big Creepy-Crawlies: The subbodies are shown to be very bug-like in design, with early forms looking like beetles that are about the size of a person's head and subsequent forms that look like giant centipedes.
• Cyclops: Summer in its core form is shown to have one Eye on a Stalk that peaks out if its shell, and, in their earlier forms, the subbodies have also only have one eye. Both can gain a few more as they grow, however.
• Defeat Equals Explosion: Justified given its diet. Upon their death, Summer's subbodies explode into a giant display of fireworks, and the same happens to Summer itself when it's finally killed.
• Eyes Do Not Belong There: In some of their later forms, the subbodies have Eyeless Faces and instead have multiple eyes across their arms and legs.
• Fatal Fireworks: It and its subbodies designs are themed around fireworks, with Summer's core being shaped like a Japanese firework shell for example.
• Flaming Hair: The subodies, and even Summer itself in its higher forms, have whiskers are lit like a firework's fuse.
• From a Single Cell: In its second phase, its core becomes the many shells lining its stomach, so unless all of them are destroyed at once, it can easily regenerate back to full health.
• Miracle-Gro Monster: It and it's subbodies grows larger by consuming chemical explosives such as gunpowder and gasoline.
• Our Dragons Are Different: Befitting its theming, Summer's higher forms resembles Chinese-styled dragons, with its second phase greatly resembling a giant dancing dragon seen performing at various festivals in China.

Spring

UMA Spring

^{Click here to see its core form}

"Ha! Of course, Jackpot! Luck shines upon me, indeed! Oh yes! For nothing beats Spring!"

An oni-like UMA that represents the concept of the Spring season. It sits atop a tower in Tokyo watching cherry blossoms bloom.

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• Affably Evil: Unlike past UMA, especially the other season UMA, Spring is significantly calmer and more approachable, content to simply watch its cherry blossoms bloom around Tokyo while having a drink. While other UMA revel in the mayhem they cause humans, Spring finds humans interesting and even participates in aspects of human culture, like wearing clothes, gambling, and drinking. While it does knowingly transform humans into cherry blossom trees, its reasons are more personal than just random carnage and even when faced with enemies or attacks it keeps a relaxed attitude. As it turns out, Spring doesn't want to hurt humans deep down, but God will force it to regardless and ultimately forces it into an aggressive third phase to do just that.
• Anti-Villain: In the end, Spring is only a villain because of circumstances beyond its control, lacking the malicious traits normally associated with UMA and only wishing to be friends with humans.
• The Alcoholic: Spring is satisfied by simply drinking from its enormous sake cup as it watches the cherry blossoms fall.
• Arc Villain: Spring is the main foe the Union and Under are gunning for in the titular Spring Arc.
• Beyond the Impossible: By the time of its titular arc, it'd been long established that UMA come in 3 total forms, being their core, first phase, and second phase, that they progress through as the reinforce their rule, and Spring itself is already in its second phase at peak power during the arc itself. After Fuuko reaches Spring late into the arc however, it undergoes an out of nowhere transformation into a third phase, shocking the Union scientist who have never seen such a thing before.
• Brainwashed and Crazy: When Fuuko's kind words begin to to reach it, God intervenes and forces Spring to transform and become more aggressive, a process Clothy straight up calls brainwashing. Its backstory reveals this wasn't the first time God forced Spring to attack humans either.
• Exact Words: By the rules stipulated of its rounds, it cannot be attacked directly. However, strokes of Unluck during the second round are able to hit it, making Fuuko and Andy realize attacks not directly aimed at Spring don't count, giving them the opportunity to get to Spring's core while it's trapped within its fully awakened third phase.
• Exposed Extraterrestrials: Spring notably averts this trope unlike Spoil, as it wears both pants and geta. This aversion Fuuko notes is a contradiction to Spring's claims it harms humans since as an UMA, it has no reason to follow rules imposed on humans. Sure enough, the reason Spring wears them was because they were gifts from its human friend.
• Forced into Evil: Spring is overall pretty friendly and doesn't have an innate desire to harm humans, but does so due to that being what UMA are meant to do. When it tries to go against the grain in the Spring Arc, God steps in and brainwashes it into doing so anyway. This also turns to not have been the first time God has done so.
• Foreshadowing: Spring tries to threaten Fuuko by showing her a list of people it turned into cherry blossoms. However, the presence of the list alone on an UMA already creates a contradiction because this proves Spring is literate in Japanese and language is a rule imposed on humans. An UMA would have no reason to adhere to rules, plus UMA Language has already been neutralized and all languages converted into English. The only way Spring would know Japanese would be being taught by a human in the past.
• The Gambler: It enjoys playing Chō-Han with its dice artifact, getting very excited when it comes up in its favor. Its third phase takes this even further by making Fuuko participate in a three round betting game using lives as the bets.
• Horns of Villainy: Downplayed. While Spring is an UMA and an antagonist with prominent horns, its also Affably Evil and much calmer than most other UMA. Played straighter in its third form, where its small white horns grow out into longer, more devil-like black horns as its personality also shifts to being more aggressive, thanks to God forcing it into said form.
• I Cannot Self-Terminate: After managing to briefly break free from God's control from a stroke of Unluck, it apologizes for attacking Fuuko and screams at God its refusal to hurt anymore humans as it loses control over itself. Before being overwhelmed, it begs for Fuuko to win the last round with its dice Artifact to stop it, which she ultimately does.
• I Just Want to Have Friends: Fuuko noted from observing footage that Spring seems extremely lonely at night while sitting on its tower and thinks what it really wants is someone to talk to. While it does laugh at Fuuko's observation and subsequent desire to chat with it, it also goes along with her wish and even seems to be touched by Fuuko's declaration of love to its cherry blossoms, so much so that when it's seemingly forced to transform into its third phase, it briefly tries to warn to Fuuko to run before fully succumbing to the transformation. It's also shown to have many objects collected from over the years and when Fuuko sees some of its memories after touching an artifact, its shown to have enjoyed interacting with humans in the past before being driven away, sadly spinning tops by itself before meeting the first Isshin and again happily enjoying the company. It's made apparent Spring treasured this friendship with the first Isshin as it's left in tears remembering him before finally outright defying God's will for it.
• Intrigued by Humanity: Unusually, Spring has a strong fascination for humans and their culture despite being created to cause them misery. Unfortunately for Spring, this also caused God to force it into a malicious form because Spring didn't want to harm humans.
• It Was a Gift: While not stated outright, Spring's pants and geta were made and gifted to it by its friend the first Isshin, who Spring still misses in present day.
• Luck-Based Mission: Spring's dice Artifact works like this. If it can correctly guess whether the dice's sum is even or odd, it can then steal away what the target cherishes most.
• Oni: Its appearance is very reminiscent of the Japanese ogre and it was viewed as a demon in the Edo period.
• Marked Change: As part of its third phase, it gains numerous red marks upon it's body to signify its more aggressive state.
• My God, What Have I Done?: Spring is horrified discovering it took humans lives and even attacked its friend Isshin while brainwashed by God to where it begs for Isshin to kill it before it loses control again.
• Odd Friendship: During the Edo period, it would often play games with the first Isshin, despite [UMAs] and humans being enemies by nature, the latter going to war hoping to change the perception of cherry blossoms that caused Spring to be regarded as a monster.
• Painful Transformation: Its sudden transformation into its third phase is quite painful, with it holding it's head in agony until the transformation ends.
• Petal Power: Has the ability to spontaneously generate cherry blossom petals that turn anybody who touches them into a cherry blossom tree.
• Reluctant Monster: Spring is an UMA who has not only no interest in hurting humans but would rather befriend them. But being an UMA, God forces it to hurt humans anyway.
• Strange-Syntax Speaker: Spring's dialogue is structured like a Japanese tanka poem, meaning it follows a 5-7-5-7-7 syllable pattern for each speech bubble. It originated from the first Isshin teaching him language with karuta games. It dropping it when reaching its true final phase shows how deep the brainwashing has gone.
• Then Let Me Be Evil: During Japan's Edo period, cherry blossoms were reviled and seen as omens of death and bad luck, leading to Spring being reviled and hated in turn due to being the blossom's representation. People would chase and even attack Spring's core despite it being rather weak and ultimately harmless. Eventually, Spring grew tired of the abuse and began to use its powers to turn its weaker attackers into cherry trees as retribution. In reality, Spring never hurt any humans willingly despite this and the last time it did was another instance of being forced by God, which it was horrified by enough to want to die by Isshin's hands.
• Weather Manipulation: As the embodiment of the spring season, it can control the weather and create summon spring showers and spring winds at its whim. However, it normally doesn't use them until God forced it into a brainwashed third phase.
• White Hair, Black Heart: In its calm and affable second phase, Spring has a mane of pink hair, but when forced into its aggressive and cruel third phase, its hair turns pure white as a part of its transformation.
• Willfully Weak: Being a quest UMA, it is as strong as the other season UMAs, but aside from turning everyone in Tokyo into cherry blossoms, Spring just observed the scenery and drank alcohol prior to the raid. Clothy reveals God brainwashed Spring because the [UMA] wasn't using its full power and coupled with its backstory, heavily implying it was trying to do the bare minimum to 'harm' humans to keep it from being forced into its malicious third form, which would have caused more damage.

Revolution

UMA Revolution

An UMA that embodies the idea of planets revolving around the sun.

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• Beast of the Apocalypse: As Fuuko notes when Apocalypse threatens it as a penalty in the 101st loop, its addition effectively jumpstarts Ragnarok early by sending the Earth hurtling toward the sun, where the Union will be forced to face God in a final battle.
• The Ghost: They're teased as a major penalty for failing the quests in both the 100th and 101st loops, yet hasn't been added to the world yet, and therefore have yet to physically appear.
• Hurl It into the Sun: While on its face their rule seems harmless in concept, the real source of them being a penalty is that it's actually this trope in practice. Instead of just revolving the Earth around the sun, their rule makes the Earth revolve into the sun over the course of a few months, setting the Earth on a collision course to a fiery demise .

Ghost

UMA Ghost

^{Click here to see its second phase}

An UMA that represents the concepts of ghosts and supernatural apparitions. It was added to the world as a reward for Autumn's capture.

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• Astral Projection: As it's rule deals in ghost and souls as concepts separate from the body, it's introduction to the world makes it possible for souls to separate from their body,.
• Bedsheet Ghost: Its design invokes this, with it's ghostly form covered by a raggedy sheet-like tarp held down by nails.
• Demonic Possession: [[spoiler:Ghost's second phase involves doing this, specifically to Nico after Andy wrecks his lab and leaves him totally despondent.
• Ghastly Ghost: Has a ragged appearance that shows its malevolent nature.
• Ghostly Glide: It has a ghostly tail instead of legs, and simply floats as a result.
• Intangibility: As one would expect from a ghost, physical attacks can't hurt it and phase right through its body. In it's second phase, it can make any part of it's body physical OR astral depending on which is more beneficial.
• Irony: Its inclusion in the 100th loop as a reward is a major part of Nico's Face–Heel Turn in his attempt to see the deceased Ichico again. When Fuuko's skipping causes Ghost to be introduced in the 101st loop as a penalty when Ichico is still alive, it's what ends up being the way to prevent her death from the complications of not sleeping via the Astral Projection its inclusion allowed. It even ends up saving Ichico from certain death when Language stabs her for Nico to get Unforgettable, since it changed the rules of death to be a person will die only once their soul is destroyed rather than when their body ceases to function.
• Sinister Scythe: Gains one as part of its second form, which it can use to sever parts of people's soul from their body.
• Soul Eating: How it sustains itself, devouring the souls of the dead. Ruin kills an entire town of people to befriend Ghost by giving it a feast.
• Soul Power: As the concept of ghosts itself, Ghost has the power to grab the souls of others and use them to sustain itself.

Blood and Shadow (Major Spoliers)

UMA Blood and UMA Shadow

Blood (as a parasol) and Shadow with Ruin

Two UMA that represent the concepts blood and shadow respectively, both of whom work in tandem to aid Ruin in enforcing God's will.

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• Bloody Murder: Fittingly for the physical embodiment of blood, UMA Blood of is capable of manipulating and generating blood to an even greater extent than Andy.
• Evil Counterpart: Both are this to Clothy, as they act as UMA allies to their chosen Negator, Ruin, the same way Clothy becomes one to Andy and Fuuko. They even both form his jacket, the same way Clothy forms Andy's Union uniform.
• Fusion Dance: Similar to Ghost having merged with Nico, Ruin implies Blood and Shadow have become extensions of himself, allowing not only for him to use their abilities, but for Unruin to protect them from harm the same way it does him.
  Ruin: Blood, Shadow'', and I are of one body and mind. Neither will die unless I die.
• Puppeteer Parasite: Blood's Juniors are these, being giant worm like creatures that infect humans by biting them, turning them into mindless God worshipers who do whatever they're ordered.
• Shadow Walker: Shadow has the ability to traverse through shadows, which Ruin uses to great effect to launch surprise.

Colour

UMA Colour

A flamboyant, witchlike UMA that manifests the concept of pigmentation. Though obviously having been present for a long time and made a brief appearance in the 100th loop, it only formally appears in the 101st loop, crashing Chikara's graduation.

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• Art Attacker: Uses its brush-shaped braids and generated paint as both a method of attack and a mobile, slippery transformation.
• Colour-Coded Emotions: Repeatedly makes these kinds of metaphors in its’ dialogue, naturally.
• Shapeshifter Guilt Trip: Takes on the appearance of others to avoid attacks. Feng, the last person you’d expect this to work on, finds himself hesitating when faced with the appearance of Ryo, suggesting his growing attachment to others’ over the school year.
• Suspiciously Specific Sermon: The specific wording of the principal’s commencement speech at Chikara’s graduation rather neatly lines up simultaneously with the details of Colour’s fight with the Union.

Juniors

Spoil's Zombies

Spoil's Zombies

UMA Spoil's Juniors, the zombified citizens of Longing created when Spoil invaded the town.

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• The Dog Bites Back: They do this to UMA Spoil, the one responsible for their zombification, by assisting the heroes in their battle with him by protecting Andy from Spoil's attacks and later sacrificing themselves to damage Spoil with Unluck.
• Our Zombies Are Different: Instead of being mindless drones, those who are zombified by Spoil retain a semblance of their humanity, though they're all miserable in their rotting form. Also, instead of being spread via a bite, zombification happens to anyone within Spoil's effect range once their number reaches zero.
• Suicide Attack: They fight back against UMA Spoil by touching Fuuko and then running toward the monster, becoming, Andy puts it, "bipedal bombs" of bad luck. This results in their deaths, but the bad luck that kills them ends up hindering Spoil as well.

The Acks

The Acks

The Acks' leader with their fleet behind him

UMA Galaxy's Juniors created after its release, an alien species that attempted to invade Earth.

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• Big Bad Wannabe: The Acks are presented as a genuine threat to the human race due to their many powerful ships, and the leader is fully ready to cull and enslave the human race. In the end, though, they're unable to handle Juiz's power and end up as nothing more than a footnote in the story at best.
• Caught Monologuing: Their leader is more than happy to ramble on about the specific details of their plan and motivation, which proves a remarkably poor call in the face of Juiz’s Unjustice.
• Fake Memories: They believe that their species has existed for millennia and have trained their whole lives to be soldiers, but were really born only a few seconds ago after UMA Galaxy's release.
• Hypocrite: The leader claims that his vision of justice, that every human on earth must die in order for the entire Acks species to survive, is infallible. Yet, when Juiz uses her power to negate that justice, he doesn't kill himself along with the rest of his species, revealing that his "infallible vision" was just talk.
• Punny Name: The Acks' bodies are covered in...axe blades.
• Sole Survivor: The leader is the only one who isn't killed when Juiz uses her power.
• The Worf Effect: They're shown to be plenty powerful, packing several giant ships that could easily overpower Earth's forces. Juiz defeats them in a matter of seconds, a perfect showcase as to why she is the Union's leader.

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