Characters: Under Night In-Birth

These are some of the characters from Under Night In-Birth and tropes that are associated with them.

This page is currently under construction. Any contributions would be appreciated.

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    Introduced in Under Night In-Birth 


Voiced by: Ryohei Kimura

A high school student who was attacked by a Void but was saved by Linne. Having awakened as an In-Birth as a result, he cooperates with Linne, preparing for when the Under Night comes again. Also known as Unknown Actor by Licht Kreis and Orie's friend.
  • Alternate Character Reading: A Kinoko Nasu tradition: Hyde's moves are written in kanji with katakana in the place of hiragana particles, and they have different furigana-styled transliterations that may or may not translate exactly to their kanji readings. For example, his Black Orbiter move's kanji reading is "Enkan no Kyouka" (Wicked Vortex of the Torus).
  • Casting a Shadow: His main power with his red sword.
  • Cool Sword: Wields a red sword known as the Insulator, or literally the Danretsu no Menzaifu (Indulgence of Snapping).
  • Fighting Your Friend: The first round of his arcade story has Orie, his friend in his normal life, as his opponent.
  • Hair Antennae
  • Having a Blast: His Dark Lotus AKA Shin’en ni Saku Kokuren (Black Lotus Blooming in the Abyss). The ground version involves him blowing up a Black Orbiter already in flight, while the midair version does it without any prerequisite at all other than being in the air.
  • Hellish Pupils: Look close; he's got cat-slits.
  • Hot-Blooded: He's pretty explosive and loud while fighting.
  • I Just Want to Be Normal: A mild form since he adapted to his powers pretty fast and will still jump into action at first notice for Linne, even when told to stay away.
  • I Owe You My Life: Due to the life-saving, he's very protective of Linne.
  • Jack of All Stats/Shotoclone: As per usual, and thus meaning many professional players will really have to play at their best to use him well. But like several examples with the latter trope, Hyde has his own unique touches/moves to help differentiate from other shotos out there.
    • However, he does lack solid mixup, since his Force Function is his only grounded-overhead attack that needs to be fully charged up first.
  • Launcher Move: Has one with his 3C command normal.
  • Multicolored Hair: Blond at the front, black at the back.
  • Ordinary High-School Student
  • Real Name as an Alias: He's refered as "Kido-kun" by Orie (Kido is considered his surname usually) as he still uses his real(?) name aside from his alliance with Linne.
  • Red Eyes, Take Warning: Though he's the main protagonist, and is most likely more heroic as he comes and goes.
  • Reverse Grip: Uses it in his 3B, 3C, Black Orbiter, Vacant Shift (first input) and Shadow Scare.
  • Scratch Damage: Hyde's somewhat supposed specialty, as unlike most powers of darkness in previous fighting games, all of Hyde's sword-based normals can inflict chip damage, even more than his special moves if possible.
  • Shoryuken: His Red-Clad Craver AKA Kou Matoishi Yami no Tsubasa (Crimson-Clad Wing of Darkness), and his aforementioned Vacant Shift AKA Kokuu wo Buntsu Dansou (Fault Dividing the Empty Air) being a reverse-grip version of it.
    • His Pale Bringer AKA Kashouseshi Shoukou no Setsu (Wedge of Sick Crimson Calling the Calamity) involves a different kind of move from his Craver via different visuals and with it being an overall different move.
  • Storybreaker Power: His powers allow him the ability to kill immortals.
  • Sword Plant: His Infinite Worth, Gyre Vortex AKA Shuuen he Sasou Rasen no Ori (Spiral Cage Alluring to the Demise), which causes a tornado of darkness to erupt around himself. This is a straight example.
    • Also has a Reverse Grip version of it with his Shadow Scare AKA Chi wo Ugatsu Kage (Earth-Piercing Shadow).


Voiced by: Ayane Sakura

The princess of the Yato clan, who saved Hyde when he was attacked by a Void.


Voiced by: Kouji Ishii

A member of the Yato clan who serves and protects Linne.
  • Ambiguously Brown
  • Blood Knight: He loves the thrill of battle as seen in his story mode.
  • Carpet of Virility
  • Cool Old Guy
  • Dishing Out Dirt: His Force Function allows him to toss a boulder at his opponent all while also being able to control its trajectory with any directional input.
  • Gratuitous German: Of course, as per French Bread and Type Moon tradition, all of his moves are written in German. Especially since it's also a bit obvious with his name.
  • Ground-Shattering Landing: Both his Infinite Worth and Infinite Worth EXS, Werfen Erschlagen (Throw Slayer) and Katastrophe (Catastrophe), respectively.
  • Mighty Glacier: He's possibly the character with the slowest walking speed out of all characters in any 2D game, yet he has the most health of every character in the game and can cut a quarter of it in one grab.
  • Power Fist: He wears oversized gauntlets called Goutessou: Hagun (Great Iron Claws: Crushing Army). They can even destroy projectiles.
  • Really 700 Years Old: Waldstein is cursed with an immortal body, so he is very old.
  • Red Eyes, Take Warning: Though he's a good guy.
  • Undying Loyalty: To Linne.
  • Wrestler in All of Us: He's the main grappler of the cast, if it didn't seem obvious enough.


Voiced by: Takashi Kondo

An In-Birth who manipulates blood as a weapon. Not affiliated with any organization, he attacks other ability users to show off his power.
  • Ax-Crazy: He's got one hell of a bloodthirsty streak. Slightly subverted in that he can be calmed down enough not to deal the finishing blow.
  • Blood Knight: One which actually uses his own blood as a weapon.
  • Bloody Murder: His ability.
  • Cast from Hit Points: Any specials that creates a pool of blood will cost him health, with most of them being projectiles and long range attacks. However, his EX moves, Infinite Worth and Infinite Worth EXS are exempt from this at least.
  • Confusion Fu: Carmine focuses on powerful zoning, while being able to shift to duking it out with the opponent up close for extra confusion to prevent punishment. He can also use his throws to recovery his own health in order to have more spare HP for his blood-based moves.
  • Difficult but Awesome: Learn to manage his health-cost mechanic, and a skilled Carmine player can easily dictate the match with his powerful zoning potential, and decent close-quarters combat. It can also be a challenge to score a perfect win with him as well.
  • Hair-Trigger Temper: He's extremely easy to piss off.
  • Laughing Mad: He's almost constantly in this mood and there's not one story mode dialogue that hasn't him do this at least once. Heck, look at his Infinite Worth, where the move's name is even him just laughing mad.
  • Life Drain: To offset his Cast from Hit Points, his normal throws and command throw are able to drain health from the opponent upon connecting.
  • Red and Black and Evil All Over
  • Red Eyes, Take Warning: Not the usual examples since he has red sclera.
  • White Hair, Black Heart: Actually has white hair, which can be seen during his battle intro before the red takes over.
  • Wild Card: He has got absolutely no affiliation, he just goes around beating the crap out of whoever crosses paths with him.

Orie Paladia

Voiced by: Saori Hayami

The Fifth Executor of Licht Kreis, an organization specialized in Void extermination. She lost her parents at a young age to a Void and fights to ensure no one else has to suffer the same loss. She's Hyde's friend outside her life as an executor.


Voiced by: Kosuke Toriumi

A mercenary and an old friend of Hilda, who wishes to put a stop to her plan.


Voiced by: Hidenobu Kiuchi

A creature bearing a resemblance to a Void and driven by hunger.

  • Arch-Enemy: To Orie since he's all but confirmed to have killed her parents when she was a child.
  • Eaten Alive: Subjects his opponent to this in his Finishing Move. He also chews on his opponent during a few other moves.
  • Flight: His unique trait in-game.
  • Glowing Eyes of Doom: Not too glowy, but still counts.
  • Horror Hunger: What primarily drives him.
  • Skyward Scream: One of his win poses.
  • Telepathy: His primary form of communication.
  • Tron Lines: Has purple ones all over his body.
  • Voice of the Legion
  • Was Once a Man: Gave up his human form, resulting in his current state. That said, he still has fragments of his former consciousness driving him and thanks characters who do not treat him as a beast.


Voiced by: Nao Touyama

An ancient humanoid weapon, known as an Autonomic Nerve, awoken by the recent increase in In-Birth and EXS.


Voiced by: Yuuki Kaji

An assassin associated with the Yato clan who seeks Linne.
  • The Atoner: Wants to undo the immortality curse the Yato clan placed on Linne and her older brother Kuon.
  • Badass Longcoat
  • Dull Eyes of Unhappiness
  • Fragile Speedster
  • Hair Antennae
  • Knife Nut: Two of 'em, no less.
  • Multicolored Hair: Mostly black with a white section at the front on the left.
  • Named Weapons: His knives are named Eliminator. Their power isn't explored, but are said to be the opposite of Hyde's Insulator.
  • Poor Communication Kills: He isn't wishing to listen to Linne or Waldstein and tries to kill the former without trying to hear out what she wants to tell him.
  • Reverse Grip
  • The Rival: Often considered as one for Hyde, seeing that Seth is seeking Linne for mysterious purposes, and Hyde is extremely protective of Linne. Confirmed when the two finally have a rivalry theme in the game's latest update.


Voiced by: Ayumi Fujimura

A sword-wielding girl whose family once served as the guardians of the land.


Voiced by: Hatsumi Takada

Also known as Paradox, the leader of the organization Amnesia. She seeks to become a Re-Birth, an existence surpassing that of an In-Birth.

    Introduced in Under Night In-Birth Exe: Late 


Voiced by: Yoshitsugu Matsuoka

An associate of Gordeau and a high-ranking member of Amnesia, playable as of Under Night In-Birth Exe:Late.
  • Attack Reflector: His Code Reflect command normal works like one, where it'll grow larger for each projectile it absorbs.
  • Badass Bookworm: Even though his beast does most of the fighting for him.
  • The Beastmaster: He summons a reptilian creature named Azhi Dahaka to fight alongside him.
  • Breath Weapon: One of Azhi Dahaka's moves (and thus is one of Chaos' special moves) and Chaos' only projectile attack next to his Code Reflect command normal.
  • Delinquent: His backstory says he used to be one, being a bit of a brute-force fighter before relying more on intellect.
  • Difficult but Awesome: A very notable example. Chaos lacks notable defensive tools such as reversals and even quick-to-use anti-air attacks other than solid pokes, along with attacks that are easily punished and over-reliance on Azhi Dahaka. However, should he be mastered, Chaos along with Azhi can easily pummel his opponent from around anywhere at anytime with solid space control, as Chaos is the only Puppet Fighter who can easily apply the sandwich combo-type of offense.
  • I Know Karate: A lot of his physical attacks involve pretty precise chops.
  • Light 'em Up: Has a ton of light-based moves in a majority of his attacks, even if in minor traces.
  • Puppet Fighter: He can summon his creature and use it as his main tool to help him in fighting. In some ways it's the only tool he has, since all of his special moves involve it. But compared to Orie, he's the only character who can apply any and notably potent sandwich combos.
  • The Rival: Apparently, to Gordeau. It's to the point that they have the first rivalry-specific music in the game.
  • Spell Book: Holds one of these in battle.
  • Throw the Book at Them: His Code Reflect has him magically sending his book forward with a light rune accompanying it.
  • Unnecessary Combat Roll: Has one as his Force Function, which not only can dodge attacks, but can easily cross-up his opponent during sandwich combos or get him out of tight spots into a nifty position of a reversal in the hands of a skilled player.

    Under Night In-Birth Exe: Late (Console version) 


Voiced by: Mayu Iizuka

A middle school student that is chasing Hyde for unknown reasons. Turns out she thinks he's a pervert, and she wants revenge, but is that really the case?
  • Blow You Away
  • BFS: Her sword, Zephyr.
  • Book Dumb / Idiot Heroine: Mistaken Hyde being a pervert, and calling her senior, Phonon, her real name many times.
  • Dramatic Wind: Even when she's standing idle, wind blows on her Girlish Pigtails.
  • Early-Bird Cameo: Originally meant to be in arcade version of original version of Under Night In-Birth. Until she went Ascended Extra to be Promoted to Playable in console version of Exe: Late update.
  • Gratuitous French: All of her moves, including her named-Force Function (one of the few FF's to be actually named) are written in a combination of both French and Japanese.
  • In a Single Bound: Her Force Function, Soyokaze no Riberete (Liberté/Liberty of the Gentle Breeze), which causes her to fly high into the air for some aerial gimmicks. Can also be done in midair like a Double Jump, but not from the grounded version of the Force Function.
  • Launcher Move: Her 3C, much like Hyde's. Only she handstand-kicks her opponent upward. Also has a ton of these with her other moves.
  • Nice Shoes: Her small boots even have little wings on them.
  • One-Handed Zweihänder: Occasionally wields her sword like so for some moves, but other than that, she normally wields it two-handed.
  • Power Palms: Her Infinite Worth, Atomosufia no Tenkuu (Atmosphère/Atmosphere/Ambiance of the Aether), involves her uppercut-slashing Shoryuken-style her opponent into the sky, then generating a wind-ball on her free palm to grind into them not unlike Naruto's Rasengan.
  • Rant-Inducing Slight: Her story opening has her ranting about how Hyde "defiled" her. Turns out in her ending that she just turned into an In-Birth after he saved her from a Void, and she chases Hyde so that he takes responsibility and returns her to normal.
  • Sempai/Kohai: Kohai to Phonon
  • Shoryuken: Her midair 8C, Tamani wa Ra Aruto (La Halte/The Stop/The Halt Once in a While), Anju no Sasoi (Ange's/Angel's Invitation) and Kaze ni Mau Purumaaju (Plumage/Feathers Dancing in the Wind).
  • Tsundere: Acts a lot one like so.
  • Wind is Green


Voiced by: Mutsumi Tamura

A mysterious young man who wears a black school uniform.
  • Animal Motifs: The spider. He traps his opponent in webs for several of his moves and his Infinite Worth EXS Endless Nightmare shows the eight floating daggers on his back attacked to his back, which only makes him look like one.
  • Brother-Sister Team: With Tsukuyomi. Except Byakuya's ending reveals that they were only pretending to be one. This is actually played straight once he learns her true intentions and decides to keep helping her.
  • Dumb Muscle: Downplayed. While he's not muscular, he is certainly powerful and treated as such. Likewise, while he's not dumb he doesn't feel easy with things like details or small talk.
  • Dull Eyes of Unhappiness: Always has them even though he isn't actually a gloomy guy.
  • Names to Run Away From Really Fast: He is referred to as "Predator".
  • Not Blood Siblings: As revealed in Byakuya's ending.
  • Ordinary High-School Student: He looks like one and Hyde even supposes he's coming from another high school nearby when they meet in his story mode.
  • Shout-Out: Byakuya bears a resemblance to Yu Narukami.
  • Trap Master
  • Troll
  • Undying Loyalty: To his sister, Tsukuyomi. During his story, he's mostly her attack dog. In his ending, it's revealed to be charade they both put up. It even looked like he was going to betray and eat her at the end, but after learning her reasons he decides to keep helping her.

    Introduced in Under Night In-Birth Exe: Late[st]  


Voiced by: Saori Oonishi

Admiring the abilities and wanting to freely use her own ability, she leaves a strictly disciplined student vigilante group, "EFG". This sensitive girl is common in these days. She has grown bored of her peaceful life as a student and kept searching for her "true self" for a long time. She use to be Nanase's senior back in their school life.

She keeps thinking that her powers as a "Fake Born" was what finding her true self meant. She walks under the night thinking that her powers should be used on other people. But people rumor that within the people who wander under the night, there's someone who takes a form of your "false self" from the time before you awakened as your "true self"...

    Guest Fighters 


Voiced by: Satomi Akesaka

Originally from Melty Blood.


Voiced by Shinobu Matsumoto

Originally from Akatsuki Blitzkampf. Introduced in Under Night In-Birth Exe: Late.