Here lies the character sheet for DEAD Tube. Character Names are sorted in their original Japanese Forms (Family Name > Given Name)
Death and Twists are the core nature of this work, so please beware of the minefield of spoilers below (marked and unmarked), even Trope Titles are spoiler magnets.
Feel free to help with additions and fixing the blurbs.
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Protagonists
Machiya Tomohiro
- Beware the Nice Ones: Machiya is a quiet, nice and introverted person, happy with being the cameraman of the film research club lead by his beloved Senpai, his reaction to the first DEAD Tube event is of shock, but his sexual arousal towards it shows he isn't really innocent; when the film research club is revealed to be part of DEAD Tube and has been lying to Machiya all this time, the guy manages to trick them before said revelation, even when all signs pointed towards him being completely played like a fiddle.
- Creepy Child: Kept buried inside, then Mashiro came in and made sure to nourish this side of Machiya. It's eventually revealed that Machiya was more open about his bizarre fascination with death and violence when he was very young, often filming dead animals he found in the street. At some point he was bullied into suppressing that part of himself, along with his memories of it.
- Distressed Dude: Abducted before and tortured during DEAD Tube House, leading to Mai's participation.
- Everyone Has Standards: As twisted as he is, even he refuses to film his sister being broken.
- Extreme Doormat: His bonding with Mashiro is making Machiya come out of his shell though, in a dark way.
- He's Back!: Following the death of his father, he attempted to distance himself from what happened, vowing to never hold a camera again. He breaks that vow after being targeted by DEAD Tube Neo, feeling like the mastermind behind it is personally picking a fight with him.
- I'm a Humanitarian: In chapter 27, he unknowingly eats curry made from his father. He is reasonable disgusted when he finds out.
- In Love with Your Carnage: Machiya only praises Mai and enjoys her presence when she is enacting brutal murders.
- Loser Protagonist: Not remarkably attractive or intelligent, seemingly viewed by everyone around him as just a tool; even Mashiro (who supposedly truly likes him) is basically just taking advantage of his dark desires.
- Morality Pet: His family is the last thing that keeps him in control of his more sociopathic tendencies. The loss of his father and sister finally drive him over the edge. Miwa becomes this for him after the death of his family.
- Nightmare Fetishist: He gets turned on by the violent actions he films. After the "Breaking Kana" arc he doesn't seem to have any sexual interest in his Dead Tube films. Its later implied he may masturbating to the videos of his sister being brutalized.
- Non-Action Guy: Machiya is a cameraman, not the star. He films the violence, but doesn't directly cause any of it himself.
- Not So Stoic: Machiya is usually indifferent to all the violence, rape and murder surrounding him, but he completely loses it when his little sister Kana is put in danger.
- Roaring Rampage of Revenge: After Kana's death, he loses it and tells Mashiro to "break" the other Dead Tubers. He later incites a mob of the surviving students to take their anger out on a Bound and Gagged George L.
- Sanity Slippage: What ever sanity he has left died with his sister.
- Sex Is Violence: Gets very turned on by watching people being brutally murdered. At one point, Miwa strips down and climbs on top of him, only to become distressed when he's unaffected by her seduction attempt. He does eventually get aroused, but only after she tells him about a painful past experience.
- She Is Not My Girlfriend: Whenever others assume Machiya and Mai are a couple, he quickly cuts it saying they are not like that at all; that he would never be close to someone as criminally insane as Mai. However, it seems Machiya may be in denial or have a double personality because whenever he “switches on” to being aroused by gruesome perversions, he showers Mai with praise; even going as far as saying she is the most beautiful thing he has ever filmed.
- Smarter Than You Look: As the series progresses, Machiya keeps inching away from the image other people had of him; it turns out he is smart enough to devise and execute complex plans to manipulate people and has sufficient engineering skills to make a homemade explosive collar.
- You Kill It, You Bought It: Apparently becomes the Film Research Club's President by virtue of the former president and all other members being dead.
- You Will Be Spared: Decided to let Mizuno off the hook, preferring to have her as a tool for later DEAD Tube uses.
Mashiro Mai
- Ax-Crazy: Mai has no issue with assaulting, maiming and killing people, and typically does so with unrestrained glee.
- Alliterative Name: Mashiro Mai
- Beware the Nice Ones: Mashiro herself has the outward appearance of an archetypal Class Princess which is bolstered by her status as the star member of the Swimming Club. But she is very quickly revealed to be a hardcore sadist who gleefully engages in wanton acts of gratuitous violence.
- The Big Girl: Despite her attractive and shapely body, Mashiro is the muscle in her relationship and “film making activity” with Machiya.
- Clingy Jealous Girl: Zig Zagged.
- While she skips the more traditional aspects of this trope (constantly hanging off of Machiya's arm, scolding him for interacting with other girls in any way), she still expresses her discontent whenever she thinks another girl is starting to get especially close to him. In most cases, this is limited to her giving them a glimpse of her "game face".
- Miwa gets some special treatment after she is caught straddling Machiya while naked, mid seduction attempt. During Mashiro's stint disguised as the 'Crazy Rascal' killer, she just so happens to take a swing at Miwa's head while ambushing the other players. Had said swing landed, it likely would have cracked her skull open.Mashiro: I just... wanted to teach you a "little" lesson.
Miwa: YOU CALL THAT "LITTLE"!?
- Combat Pragmatist: If Mashiro wants to kill someone, she’ll gladly exploit any dirty and underhanded tactic to do so. Such examples include gouging out the opponent’s eyes, exploiting their psychological vulnerabilities, urinating on them, turning their hostages on them, and even surrendering during a fight in order to condemn everyone who had bet on her to death.
- Cute Bruiser: Beautiful as she may be, Mai is an absolute brute when on a killing rampage, as the film research club found out the hard way. In the suicide arc, she manages to beat three much larger boys into a bloody pulp with ease...while smiling. Then in the Justice Man arc, Mai effectively massacres a small army of armed goons entirely by herself.
- Determinator: Played With. As strong, resourceful, and terrifying as Mashiro is, she can be taken down... unless she knows Machiya is filming her. In that case, you'd best pray he told her to take you alive for some reason.
- Dual Wielding: She's capable of using two batons just as easily as one as demonstrated when she decides to get serious during the climax of the Justice Man arc.
- Establishing Character Moment: We are shown Mai’s insanity as early as the beginning of the story, where she happily smiles for the camera while completely covered in blood right after bludgeoning a guy to death.
- Even Evil Has Standards:
- Although it can be difficult to tell due to her maintaining her usual cheerful nature, it appears that even she is disgusted somewhat with Arimura Ten’s lying and manipulative nature, as well as using her brother to kill innocent people, such as the Diligent Manager.
- Same goes for the fans of Justice Man, due to their cowardice and flippancy.
- Forgotten First Meeting: When questioned about "when she fell in love with Machiya", we learn via flashback that they met as young children back before Machiya repressed his fascination with death. She asks him why he's filming dead animals, to which he (eventually) answers "because it's beautiful". Mashiro is stunned, as it's the first time she has met anyone who "sees" the world in the same way she does.
- I Just Want to Be Beautiful: Deconstructed. Despite how physically attractive she is, Mashiro doesn't feel beautiful unless she's being her "true" self. Which in her case, means engaging in gratuitous violence and murder. But the rest of society considers such things "dark, ugly, and disgusting"... except for Machiya. Not only does he tolerate her violent side (regardless of how much he might seem to protest), he's sexually aroused by it; calling her "the most beautiful thing he's ever filmed".
- Lawman Baton: Mashiro's weapon of choice is a collapsible baton, presumably because it's both easy to use and to hide (when necessary).
- Ms. Fanservice: Mashiro is this in the World of Buxom that is the DEAD Tube universe. There's not a single character, male or female, who doesn't acknowledge her status as a Head-Turning Beauty. Mashiro herself knows this, and isn't above exploiting her looks to seize an advantage for herself.
- Self-Made Orphan: Mai's ascent to stardom in the DEAD Tube community came from her uploading a video where she apparently massacred her whole family, including her little sister.
- Terror Hero: Calling her a "hero" in any context is pushing it, but a key part of Mashiro's success as a fighter is her innate ability to inspire sheer dread into the hearts of her enemies. Throwing off their gaurd long enough for her to land a killing blow.
- Wrestler in All of Us: Busts out a German suplex to finish off Ma-chan in chapter 29.
- Yandere: Due to him being the first person she met who shares her perverse interest in death and violence, Mashiro has developed a psychotic obsession with Machiya while asserting that he is for her and her alone. When faced with a potential romantic rival like Miwa, Mashiro usually defaults to acts of intimidation or outright assualt if pushed.
Supporting Characters
Mizuno Saki
In truth, Mizuno is someone who only cares for her acting and the money she can get for it, openly accepting the perversions enacted by the Film Research Club for the money and fame DEAD Tube could bring, even willing to be 'raped' by three fellow members in order to instigate Machiya into acting for her sake. She too secretly mocked him behind his back, thinking Machiya was just a sheep.
Not long after the Film Research Club massacre, it is revealed Machiya spared her just so she could be of use to him in future DEAD Tube activities.
- Because You Were Nice to Me: She's grateful to Machiya for sparing her after the Film Research Club massacre.
- Beautiful All Along: Not like she was hiding much but when she goes on camera though, Mizuno steps up a few notches.
- Beauty Is Never Tarnished:
- Despite being hit right in the face and suffering a broken nose, she comes back with no visual scars at all.
- Subverted when she suffers an even more extreme example of it during the Justice Man arc, where she is brutally raped by Justice Man, stabbed multiple times with a pick and beaten to a bloody pulp (including a few of her teeth knocked out). She comes back a couple chapters later with her face noticeably bruised and with a couple of bandages.
- Bring Me My Brown Pants: Peed herself when Mashiro started demolishing the Film Research Club members.
- Crocodile Tears: Mizuno takes her acting seriously; crying while being "raped" to make it look real as it gets, crying for Furui to make him regret his suicidal streak.
- Disney Death: The last time we saw her, she was hit in the head really hard by Mashiro's baton. She comes back a few chapters later looking none the better.
- Really Gets Around: Give her a good sum of money and Mizuno will act in any sex scene, with real sex; Machiya uses her later for the same purpose.
- Shrinking Violet: Her "normal" state.
- Single Woman Seeks Good Man: How she feels about the Diligent Manager after her failed seduction attempt. She's completely overwhelmed by his refusal to break from his principles, refusing to lust after her even as she and Matsumura are literally having sex with him. Afterwards, he chastises the two of them with an hour long lecture, saying that they should value themselves more as people. She's never met someone who has treated her with such respect and kindness without an ulterior motive (such as sex or money) before. As much as she outwardly denies it, she genuinely believes he is a good man, going so far as to convince Machiya and Mashiro to cancel their plan to kill him. Shame that the Justice Man team ends up defaming and killing him using a nearly identical plan.
- Sole Survivor: From the ones who plotted behind Machiya's back.
Miwa Hanae
- Action Survivor: Shaping up to be this, considering she managed to hold her own (albeit briefly) against a pro DEAD Tube attacker after becoming incensed from seeing a younger girl get decapitated right in front of her. But knowing this series, it could be set up for a case of Kill the Cutie later...
- Alpha Bitch: Introduced as a vain girl who bluntly asks a teacher how many guys she fucked, takes loans without care just to buy anything she fancies, offering her body is the first thing she does when trying to convince a guy she previously couldn’t care less about to help her.
- Because You Were Nice to Me: Mellows out considerably towards Machiya when he sets out to help her in the Betsuki episode.
- Broken Bird: Only temporary, but Miwa is left a broken mess after Machiya manipulates her into killing someone.
- Heroic Sacrifice: Attempts to make one of these during the fifth DEAD Tube game, offering herself in exchange for the young girl being held hostage. She survives. The young girl doesn't.
- Lovable Alpha Bitch: Ironically, when compared to other characters she ends up being one of the “cleanest” around; she is disturbed by the true nature of DEAD Tube and generally comes off as one of the nicest (i.e. least amoral) characters in the series.
- Nice Girl: Eventually evolves into this, especially in comparison to everyone around her.
- Only Sane Man: She seems to be the only character who realizes how messed up DEAD Tube really is. She's also the least homicidal and manipulative.
- Sorting Algorithm of Mortality: Young, naive, materialistic and caught seducing Machiya by Mashiro Mai, she tripped all the flags for a particularly nasty death. Surprisingly averted as she has kept her head for now.
- Tsundere: Tries to excuse her worries for Machiya by saying she only wants him alive to provide her assistance for future DEAD Tube phases, her expressions and mannerisms imply something else.
- Voice of Reason: Tries her best to be this, but is often ignored.
Shinkai Mahito
A member of the resurrected Film Research Club who, much like his fellow club members, idolizes Machiya. He wrote the original script for DEAD Tube Neo, which his fellow club members and the currently unknown creator of the DEAD Tube Neo app used to lure Machiya out of seclusion. Like Mizuno before him, he was specifically spared by Machiya at the close of the DEAD Tube Neo arc so he could be of use to him in the future.
- Distressed Dude: Abducted before and tortured during DEAD Tube House, leading to his meido's participation.
- Lonely Rich Kid: Lives in a manor and has a meido to take care of him. His parents are never mentioned. His only friends were his fellow club members, who turned out to be just as obsessed with him as they were with Machiya.
- Sex Is Violence: Like Machiya before him, he gets very turned on by watching people being brutally murdered.
Director's Suicide Arc
Oushima Sanagi
However things weren’t as they seemed to be, Oushima reveals herself to be someone obsessed with making the perfect picture, for her it was a tale of a boy who foolishly became attached and in love with an upper class girl, that girl would nourish that false perception to one day have that boy killed after being emotionally destroyed when he finds out the truth, Machiya and herself are the leads in her film.
- Bitch in Sheep's Clothing: Never actually liked him, all of her generosity towards him was just to fuel a fake friendship, that she would shatter as part of her much expected film.
- Broken Pedestal: While the betrayal from the whole film research club hit Machiya hard, the club’s President hurt him the most: Oushima was his beloved Senpai, Machiya admired and harbored romantic feelings for her; when she revealed herself to be part of DEAD Tube, also being a completely different person personality-wise and had orgies behind his back knowing full well he liked her, Machiya quickly doomed Oushima to her death.
- Character Death: Via Disney Villain Death after being dangled off the school building.
- Cool Big Sis: What she is for Machiya and how he saw Oushima as, all a façade of devious proportions.
- Disney Villain Death: Double Subverted. She seems to fall to her death, but it was a set-up; she slid safely to a higher floor while her "corpse" was subsituted for another member. The second time was real.
- Idiot Ball: For someone who has been manipulating Machiya for a long time, Oushima should have put more effort in doctoring a photo while trying to fool someone whose specialty is dealing with footage, immediately noticing such an amateur collage.
Betsuki Arc
Betsuki Eri
Betsuki’s past is revealed to be a case of a Teacher and Student affair, she fell deeply in love with a student who convinced her to follow a serious and sexually intimate relationship; in the truth the student used Betsuki as gateway for him and his friends to have sex, the school board found out and she was fired; however Betsuki became twisted after she was offered with keeping her career as a teacher if she participated on DEAD Tube, creating a perfect image of her beloved student, projecting in anyone she has sex with, if they fail to please her she will kill them, like she originally did with all the guys her boyfriend shared her with.
- Ax-Crazy: Once aroused, she kills anyone who fails to sexually satisfy her.
- Beware the Nice Ones: When attacked by a group of students who proceed to rape her, she begins to show signs of actually being a pervert. Then when everyone is tired of her when she's still fired up, she proceeds to kill every single one of them, thinking they are fakes to her true "beloved" Kazuki.
- Boom, Headshot!: With aid from a pistol sneaked in by Mashiro, she executes three of the four students who assaulted her with this. Then Mashiro takes the same pistol and takes out Betsuki-sensei in the same manner for assaulting Machiya.
- Character Death: Via Boom, Headshot! from Mashiro when she turns on Machiya.
- Cool Teacher: She genuinely cares for her studends and wants to be friends, this was no façade.
- Hot Teacher: Unfortunately for Betsuki this trait of hers was exploited and abused to no end.
- Teacher/Student Romance: A dark take on one, and the beginning of her madness.
Perfect Suicide Arc
Furui Kazuo
- Character Death: Via Explosive Leash created by Machiya. Technically considered a suicide, as he was filmed placing it on himself of his own free will.
- Driven to Suicide: Double Subverted. He already had no will left to live when he initially approaches Machiya. However, Machiya has no interest in filming a simple suicide challenge video, having already watched several others and found them incredibly boring. Instead, Machiya devises a plan for Furui to become popular: paying Mizuno to become his girlfriend, having Mashiro beat his bullies into submission and force them to become his lackeys, and continuously lending him great sums of money to spend however he wants. The plan succeeds with Furui becoming wildly popular as a result, gaining some spark in the life he previously saw as meaningless.
This was all part of Machiya’s plan; to have Furui experience all of the joys of life in an effort to rekindle his will to live... before killing himself anyway. At first Furui seemed to have seen through the plan, forcing himself to return to his nihilistic views and placing the explosive collar on to end it all. But Mizuno’s last display of sobbing over his impending death caused him to flip again, saying he wanted to live. The final video captures what Machiya envisioned all along: the suicide of someone who wanted to live. - Hesitant Sacrifice: While he is shown to go very willingly with the suicide video, when he sees Mizuno weeping over his impending death, he quickly changes his mind. Unfortunately it's already too late...
- Not Afraid to Die: Part of his Driven to Suicide, he does not fear death. However, by the end of the filming sessions, he rapidly has a change of heart during his last seconds alive.
Crazy Rascal Arc
"Crazy Rascal"
The identity of the Crazy Rascal is assumed by three people, although only one is the real Rascal.
Mai assumes the role of the killer once she catches Miwa and Machiya in bed, feeling betrayed she disappears for much of the arc, while in truth it was planned all along by Machiya and Mai for her to act in the shadows, still Mai didn’t kill anyone as the Crazy Rascal, just giving some scares while assuming the role.
The most active Crazy Rascal is Nishijima Hideo’s twin brother, he reveals himself to be a hardcore fan of horror films, making this DEAD Tube game his playground to enact his horror film fantasies, Nishijima dwells on the fact he always was the more talented twin but hated the fact his brother didn’t put any effort in anything, being average wasn’t the problem, it was being a leech that never tried anything was what pissed Nishijima off, it reached the point where his brother took loans from Loan Sharks using Nishijima’s identity, Nishijima killed many during the game, including his twin brother at the very beginning.
The arc ends with a twist however, the real Crazy Rascal wasn’t someone in a cartoony rascal costume, “Rascal” simply meant someone mischievous and bratty, it was the mysterious little girl all along who seemly fell for her death with Nishijima, Machiya and the others wonder who she killed during the game and if she truly died.
- And Now for Someone Completely Different: Becomes a protagonist starting with the DEAD Tube House arc.
- Ax-Crazy: Has no qualms with murdering the participants of the DEAD Tube game.
- Big Sister Worship: The real Crazy Rascal views Miwa as a sister-figure after she treats her with kindness, and goes straight to bat to protect her several times afterwards.
- Clingy Costume: A mundane example. Mashiro's Crazy Rascal costume is damaged during a confrontation with Ishizaki and the zipper is destroyed, rendering her unable to take it off until it is further damaged in a fight with Nishijima's brother.
- Collective Identity: Four different people wear the costume at different points.
- Noumi is murdered and stuffed into the costume by Jouen after he finds out she's not a virgin.
- Mashiro puts on the costume so she can beat up Miwa in revenge for getting in bed with Machiya. She later attacks Zaitsu out of rage, but does not kill him.
- Nishijima's twin brother is the true killer and the Crazy Rascal confronted at the end of the arc.
- The unnamed little girl is the true Crazy Rascal and the target of the game.
- Malevolent Masked Men: They murder people while wearing a creepy rascal costume that hides their face and identity.
- Pint-Sized Powerhouse: The real Crazy Rascal, the little girl, comes back later in the series to assist Miwa in the zombie escape game, showing her in full costume, being extremely strong for her size.
- The Quiet One: The killer does not speak when attacking the participants. Most of the costumes completely silence the wearer's voice, as noted by Mashiro. Nishijima's brother's costume has a microphone built in which he uses during the final confrontation. The little girl barely speaks four words unmasked, but is perfectly chatty when she wears the costume during the zombie game.
- Red Herring: Numerous participants are accused of being the killer. There are multiple Rascal suits, and a total of three people are caught wearing one: Noumi, Mashiro and Nishijima. In the end, none of these are the true Crazy Rascal.
- Samus Is a Girl: Noumi, Mashiro, and the little girl are three of the people wearing the mask.
Breaking Kana Arc
Machiya Kana
- Break the Cutie: George makes her a target of DEAD Tube, where the goal is to film her being broken.
- Defiled Forever: After being sexually assaulted and forced to kill her father, Kana believes this of herself, claiming that she's "dirty now."
- Slashed Throat: Her ultimate fate, after being brutally tortured by the DEAD Tubers hired by George.
George L.
- Bound and Gagged: By Machiya, to take out his revenge.
- Loony Fan: Obsessed with Machiya's work, and ends up doing terrible things to him and his family in order to get him to completely snap and film his "masterpiece".
Matsumura "Ma-Chan" Kaoru
- Ascended Extra: She started off as a minor antagonist who got throughly humiliated by Mashiro before becoming a major recurring character in the later story arcs.
- Create Your Own Villain: She's the one who introduces the Arimura siblings to DEAD Tube and recruited them both to replace her late comrades from Team Kirenza, kickstarting the entire Justice arc.
- A Day in the Limelight: She becomes the primary protagonist of the House arc, with the plot revolving around her efforts to deduce which of her fellow participants is a traitor.
- Easily Forgiven: Matsumura is perfectly willing to bury the hatchet with many of her former enemies, especially when she's in the position to personally profit from it. The most egregious example being Justice Man, who she invites into her home for another business proposition even after he had both brutalized and sexually assaulted her. She also backs out of killing Toshio for filming and raping her during the DEAD Tube House event once he made it clear he planned to fiscally compensate her afterwards.
- Enemy Mine:
- Her display at the end of the Justice Man arc could be considered this. She joins Mashiro in the ring to block the way of the spectators trying to escape to the other side of the arena. Could also be considered a Villain Team-Up depending on how you view them.
- The DEAD Tube House arc sees her team-up with Justice Man once more, even after their first buisness venture as content creators ended in betrayal.
- Even Evil Has Standards: Tried to convince Justice Man and Ten to not kill Diligent Manager, most likely because she saw him as a good person who didn’t deserve to die. She is beaten and raped by Justice Man for her trouble.
- Evil Cannot Comprehend Good: Is genuinely confused as to why Miwa is angry with her after having just murdered a child in cold-blood.
- Four Eyes, Zero Soul: She wears glasses in her civilian attire and is just as much of an amoral sadist as the rest of DEAD Tube's participants.
- Karmic Rape: Matsumura ends up being the target of this trope on three seprate occasions and counting. First by Mashiro, who sodimized Matsumura with a police baton after interrogating her. Then by Justice Man, who raped her for simply trying to talk him out of killing Dillgent Manager. Which was then followed by Toshio and Mitsuko, who both raped Matsumura on camera after drugging her drink.
- Katanas Are Just Better: Her weapon of choice, which she refers to as "Satoshi-kun".
- Only in It for the Money: Claims this as her motivation, saying that she uses DEAD Tube to pay for her tuition and school expenses. But her line about how "awesome" it feels to slice up other humans with her sword indicates that she's just as much of a sadist as any other Pro DEAD Tuber.
- Would Hurt a Child: The first thing she does when introduced is decapitate a child with her katana.
Gesukawa Otome
- Batter Up!: Her signature weapon is a metal baseball bat.
- Man Bites Man: Definitely not shy about using her chompers to take a chunk out of her opponents.
- Scary Teeth: Fairly decent chance her family tree contains a shark somewhere. She claims to be quite proud of them, and is understandably pissed when Mashiro knocks one of them out with a sucker punch to the jaw.
G. Sakakibara
- Blood Knight: More than the others, she seems to enjoy fighting just as much as (if not more than) straight up murdering people.
- Lightning Bruiser: Trained in dozens of unarmed combat styles and martial arts, sporting enough muscles to make most professional body builders jealous.
- Wrestler in All of Us: She kills a student by snapping his neck with a running clothesline.
Ms. Balus
- Beauty Equals Goodness: Averted hard. While this could be applied to the series as a whole, she arguably takes it to the next level; taking great pains to dress and maintain mannerisms of a beautiful, refined high society lady. After losing her cool (courtesy of a few hits to the face by Mashiro), Machiya calls out her true nature as someone who just wants to destroy things that other people consider beautiful, innocent, or pure.
- Briefcase Blaster: Keeps the majority of her arsenal in a suspiciously small suitcase.
- Giving Them the Strip: Slips out of her dress in order to avoid being pinned down by Mashiro, revealing a full ensemble of panties, a corset, stockings and garter belt underneath.
- Lady of War: Maintains an air of grace and elegance while using firearms to keep her distance from all the blood and carnage that unfolds. She also carries an umbrella to keep herself from getting drenched in blood.
- Nail 'Em: At one point she attacks Mashiro with a pair of weaponized nail guns equipped with extended magazines.
Kaneko Gin
A middle-school delinquent who's in love with Kana and refuses to leave the DEAD Tube game until she's safe.
- Action Survivor: Makes his introduction by drop-kicking Ma-Chan in the face three days after the middle-school goes to hell, looking pristine.
- Determinator: He refuses to leave Kana to her fate and gets up from beating after beating on his way to rescue her. After her death, he has the same attitude towards avenging her.
- Made of Iron: He survives being thrown into a wall, cut with an electric chainsaw, a Curb-Stomp Battle with Sakikabara, falling out of a 3 story window, and a second off-screen brawl with Sakikabara. It takes 3 point blank shots from Ms. Balus to finally take him down, and even then he survives long enough to refuse help and explain why he fought for Machiya.
Justice Man Arc
Arimura "Justice Man" Masayoshi
- And Now for Someone Completely Different: Becomes a protagonist starting with the DEAD Tube House arc.
- Ax-Crazy: Is almost as crazy as Mashiro, having no qualms killing or raping anyone he or his sister deems to be an evil villain.
- Berserk Button: Accusing him of being a “fake hero” is a good way to end up having your face smashed in by Justice Man, as Diligent Manager learned the hard way.
- Break the Believer: The core of Machiya's plan to defeat Justice Man by showing him how many of the things he believed in were nothing but lies or flimsy constructs. His fans only cared about him as long as he was winning; as soon as it looked like he might lose the fight (which would cause them to lose their bet) they turned on him, calling him weak and pathetic for being unable to defeat a girl.
His sister, his partner and confidant who supported him from the very beginning, who encouraged him to become "Justice Man" in the first place? Not only did she frame the Yakuza whom he killed as the culprit of the fire that scarred him, but it's implied that she was the one who started it in the first place. - Brother–Sister Incest: Has a sexual relationship with his sister.
- Calling Your Attack: Does this with most of his attacks. Notable examples include “JUSTICE SCISSOR!”, “JUSTICE FIRE!”, “JUSTICE SPEAR!”, and “JUSTICE END!”.
- Cloud Cuckoolander: Played for Horror. Genuinely believes he can “purify” women with evil hearts with his “Justice Spear”. Many of his rather eccentric ideas are fueled by his sister's advice.
- Dumb Muscle: Has a very muscular build as befitting of a self-proclaimed superhero while being a rather gullible person.
- Idiot Hero: Considers himself to be the world’s #1 hero, but he generally isn’t too bright. His sister often takes advantage of this for her own means.
- He's Back!: Seemly becomes someone who can think for himself later on, coming back as Justice Man, to assist Machiya in saving Miwa in the zombie escape game.
- Hero with an F in Good: Though he means well and genuinely believes himself to be a heroic individual, he is simply too easily influenced (usually by his sister) into doing terrible things to qualify as a good hero.
- Heroic Build: He got this one right at least.
- Loves My Alter Ego: Sums up the true nature of his relationship with his sister. She's so in love with the persona of Justice Man that once he loses his mask after saving her from an explosion, she doesn't even recognize his actual face, calling him disgusting and demanding he stop touching her.
- Meaningful Name: Unsurprisingly, his first name can be read as “Justice”.
- "The Reason You Suck" Speech: Courtesy of Mashiro.Mashiro: Get it now? This is the truth of your 'justice'. It has no conviction... It has no guts. It doesn't even have a face. They claim anything good for them as 'justice' and curse the other side as 'evil'. That's why without any inspiration, they simply follow the 'winner' while changing masks.
Arimura Ten
- Alternate Character Interpretation: Discussed in-universe, then defied. Mizuno thinks that Ten's final cruel words to Justice Man were for his protection, but Machiya comes in with a backstory that places all of Justice Man's violent actions on Ten's manipulations. When called out for making it up, he says that it doesn't matter because it was believed and Ten is too dead to talk about her true motivations.
- Curtains Match the Window: Wears colored contacts so that each of her eyes have a different color that matches with her different hair color.
- Dirty Coward: Is revealed to be this, having lied to her own brother and used him to kill numerous innocent people, simply so that she doesn’t have to take responsibility for her actions.
- It Amused Me: Implied/suspected to have been her main motivation.
- Manipulative Bastard: For all the same reasons cited above.
- Perky Goth: Wears primarily black and has a skull pattern on the back of her jacket, but is usually quite cheerful and energetic. She always happily goes along with her brother’s “heroic” escapades.
- Villainous Incest: How she expresses her "love" for her brother. In reality, it's just a tool she uses to manipulate him into doing her bidding... which she just happens to get really into sometimes.
Diligent Manager
A middle-aged man who happens to be the Number One content creator on DEAD Tube. His videos are basically trashy gossip shows with none of the sex or violence in every other Dead Tube video, but he always gives away all the money he makes on them to his viewers.
- Frame-Up: Ten and Justice Man splice the video of Mizuno forcing herself on him with audio from them raping and torturing her so they can kill him in the name of "Justice".
- Not Distracted by the Sexy: What does he do when two very attractive women come into his apartment to seduce him? Tell them he's busy editing a video and that they should cover up. And when they rape him? He chastises them for treating sex so carelessly.
- Screw the Money, I Have Rules!: The hundreds of millions of yen he makes on DEAD Tube mean nothing to him. Instead, his goal is to destroy DEAD Tube from the inside by becoming a Premium Member and put an end to the meaningless violence. This complete disregard for wealth along with his concern for Mizuno's health also causes her to fall in love with him.
PLHG Arc
Yomiko the Ender
- Ax-Crazy: Faked his own death and masterminded every terrible thing that has ever happened to Machiya in his entire life, including the gang rape and murder of his own daughter Kana, just so he could record his son's never-ending spiral of misery as his DEAD Tube magnum opus. He is also revealed to have been one of DEAD Tube's founders, and has done even more monstrous things in the name of content creation for the platform.
- Bad People Abuse Animals: Long before the founding of DEAD Tube, he murdered his pet dog and made its remains into curry.
- Big Bad: The creator of DEAD Tube and had a large hand in orchestrating everything that happened to the protagonists. He even admits to raising his daughter just so he could have her murdered in a video.
- Digital Avatar: Takes the form of an anime catgirl.
- Would Hurt a Child: Not only did he allow his daughter to be murdered, the only reason he raised her for fourteen years was specifically to film her being raped and killed.
DEAD Tube Neo Arc
Yotsuzaka Eno
Introduced in chapter 57. Her dream of being an actress led her to be invited to the resurrected film research club. She's soon tricked into downloading DEAD Tube Neo, pulling her directly into the plot.
- And Now for Someone Completely Different: She's the protagonist of the DEAD Tube Neo arc, with Machiya's group only appearing sporadically throughout the story.
- Properly Paranoid: And understandably so. After being betrayed by Tsubaki, and growing suspicious of Shinkai, Yotsuzaka starts to believe that everyone is out to get her. By the time the film research club reveals that she was right to be paranoid, she's already in contact with Machiya and largely faking her paranoia.
- Put on a Bus: After the events of the DEAD Tube Neo arc, she leaves the Film Research Club and transfers schools, specifically so she wouldn't be pulled into DEAD Tube again.
- Screw This, I'm Outta Here: After going through one DEAD Tube event, she chooses to move faaaar away, not wanting to continue associating with the psychos she had to rely on to survive the storyline. She even admits to Shinkai that she thinks they're crazy for staying.
DEAD Tube House Arc
Akitsu Tatsumi
Matsumura Kaoru's co-worker, who participated in the DEAD Tube House event. She's actually a debt collector. After DEAD Tube House, she took Justice Man and Rascal in as employees. She returned for the DEAD Tube Coin arc, as she learned of the app's existence while attempting to collect on a debt and met with Machiya to request his assistance.
- Cuteness Proximity: Towards Rascal, commenting that she's the kind of woman who can do anything if it's for someone cute. She entered DEAD Tube House solely to protect Rascal, later taking her in as an employee after the event ended.
- Evil Debt Collector: Her real profession, which she reveals to Kaoru in chapter 88 after DEAD Tube House is finished.
