President Arisa Kuhouin
Voiced by: Aya Endo (Japanese), Caitlin Glass (English)
The student council president.
Her Void is a sphere-shaped shield that can separate and eliminate attacks.
- Arranged Marriage: In Episode 16, her grandfather planned to give her to the leader of the Ming Hua Group as a wife in exchange for his help determining the future of Japan, and Argo is sent to retrieve her. The plan falls apart, though.
- Ascended Extra: Appeared in all of a single episode on her own before joining with the rest of Shu's friends in his rush to save Inori.
- Beware the Nice Ones: After Inori's attack on her (and her own belief that it was out punishment for trying to go against Shu), she decides to create a coup d'etat with the student body against Shu and succeeds.
- Bitch in Sheep's Clothing: Her niceness hides a ruthless personality behind it.
- Break the Cutie: Getting attacked by Inori really did a number on her.
- Broken Bird: Is completely delusional after the events of Episode 16.
- Clingy Jealous Girl: She does not like Inori because of her closeness to Gai.
- Deflector Shields: Her Void.
- Disney Death: It appeared as though she was killed off by Inori in Episode 16, but Episode 17 reveals that she's still alive and merely had her hand injured. She is shot in Episode 22 and is seemingly dead until she is shown with Da'at members, still alive but wounded.
- Enemy Mine: She tentatively teams up with Shu in Episode 19 to look for Haruka.
- FaceHeel Turn: She turns the school against Shu before joining Gai.
- Hair of Gold, Heart of Gold: Beautiful, a prestigious Ojou and very rightful. Eventually subverted after her FaceHeel Turn.
- Imaginary Love Triangle: She has deluded herself into thinking that she's competing with Inori for Gai.
- Karma Houdini: Despite turning on Shu and leaving everyone defenseless, Arisa gets off scot-free.
- Murder the Hypotenuse: Although never outright stated, it's very clear that she wishes to kill Inori after finding out that Gai seems to need her more. Were it not for being surrounded by many people who would most definitely have objected, and the fact that Inori is Beware the Quiet Ones brought Up to Eleven, she likely would have not succeeded.
- Nice Job Breaking It, Hero!: Arisa's plan to usurp Shu not only left everyone completely defenseless when GHQ showed up after the battle was over, but also gave someone that clearly Came Back Wrong the chance to steal the Void Genome.
- Sex for Services: At her lowest, a desperate Arisa sleeps with Nanba to ensure the success of her plot against Shu's tyranny.
- Ship Tease: She seems to develop a small crush on Gai after meeting him, but nothing ever comes of it. When Gai returns, she views him as a savior and is jealous of Inori.
- Spoiled Sweet: She comes from a wealthy and influential family, but she is a just person and defends Shu when he returns to school from rumors of his arrest by the GHQ.
- Stepford Smiler: Shows signs of this. Naturally, her Void ends up being Deflector Shields.
- Stone Wall: Easily holds off several men armed with full auto machine guns for several minutes.
- Student Council President: She serves as Tennouzu High School's leader of the student government. At least, initially. Due to her inability to appease the student body after the Lockdown, they decide to elect a new student council president—Shu.
- Subordinate Excuse: She only joins the Da'at to be close to Gai.
- Yandere: Post-FaceHeel Turn, she becomes this to Gai. She desires to be useful to Gai, is jealous of Inori due to her relationship with Gai, and wants to know everything about him.
- You Monster!: Inori is called by Arisa, along with revived!Gai in Episode 18.
President Shu Ouma
Chairman Kanon Kusama
Voiced by: Minako Kotobuki (Japanese), Apphia Yu (English)
The chairman of Class 2-A.
Her Void is a scouter that allows the user to see long distances.
- Alliterative Name: Her first and last name start with the letter K.
- Broken Bird: Hare's death and the changes in the school reduce her to a sobbing wreck.
- Pervert Revenge Mode: Let's just say she wasn't pleased when Shu accidentally grabbed her breast.
- Satellite Character: To Yahiro and to a lesser extent, Hare.
- Skinship Grope: She playfully grabs Inori's breasts in Episode 8.
Voiced by: Yu Shimamura (Japanese), Tia Ballard (English)
Shu's classmate. She has feelings for Shu.
Her Void is a long white bandage that can heal anything.
- Anguished Declaration of Love: To Shu in Episode 10. She does it again in Episode 15 before they are interrupted.
- Betty and Veronica: The Betty to Inori's Veronica.
- Brooding Boy, Gentle Girl: Has this dynamic with Shu.
- Character Death: She is killed in Episode 15.
- Curtains Match the Window: She has matching brown hair and brown eyes.
- Died in Your Arms Tonight: Subverted that by the time Shu gets her in his arms, she's already dead, but it is when she's in his arms that her crystallization state finalizes and she disappears.
- Dogged Nice Girl: Towards Shu.
- Futile Hand Reach: As she dies, Hare reaches to hold Shu's hand but expires before she can do so.
- Green-Eyed Monster: She is jealous of Inori, but far too gentle a person to call her out.
- Healing Hands: Her Void.
- The Heart: After the lockdown goes into effect, she has this effect on the main group of students.
- Heart Is an Awesome Power: Her Void can heal anything.
- Heroic Sacrifice: Heals Shu rather than herself and bleeds out. Her Void getting shot then causes the Apocalypse Virus to rapidly manifest itself and her corpse shatters shortly thereafter.
- Hopeless Suitor: Subverted. Shu is aware of her feelings and even at one point tries to kiss her, but due to his Heroic BSoD (and is thus unable to accept her feelings thoughtfully), Shu is rejected by her.
- Longing Look: Tends to eye up Shu a lot.
- The Lost Lenore: To Shu.
- Miss Fixit: She can heal anything. Like a robot. Or a bridge.
- Replacement Goldfish: Shu uses her in this fashion during his Heroic BSoD when everyone in Funeral Parlor, including Inori, leaves him. Initially, she tries to support Shu in any way she can, but she eventually calls him out on it. In Episode 11, Shu seemingly reciprocates, or at least treats her with a great deal of kindness for it.
- Undying Loyalty: While not as vocal about it as Inori, Hare is very loyal to Shu. She's the only one of his old friends to wholeheartedly support him as student council president, right up until her death. Hare lampshades this in her speech about the "kind king," which represented Shu—while everybody else became dissatisfied with the king and eventually rebelled against him, she supported him because she saw the good in him.
- Unknown Rival: She considers Inori her rival for Shu's affections. Inori vaguely notices her existence.
Voiced by: Daisuke Sakaguchi (Japanese), Corey Cleary-Stoner (English)
Shu's classmate and a member of the motion picture research club. A big fan of Inori.
His Void is a strange camera that can open anything it photographs.
- Anguished Declaration of Love: He nearly confesses to Inori in Episode 8 when Shu drops in to extract his Void.
- Art Evolution: After crossing the Despair Event Horizon mentioned below, he visually appears much older, even though his character design is unchanged.
- Bromantic Foil: To Shu.
- Curtains Match the Window: He has black hair and black eyes.
- Despair Event Horizon: Crossed it after Hare's death and the Void Ranking System. Every appearance since has had him as an empty shuddering shell of the person he used to be.
- The Dog Bites Back: The moment Hare died and Shu turned Fallen Hero, life has been hell for Souta. Come Episode 17...
- Dogged Nice Guy: Towards Inori.
- Fanboy: Of Egoist and Inori.
- The Friend Nobody Likes: Souta is flawed, he can be obnoxious and reckless, but the gang seems to keep him around because he has good intentions.
- Hypocrite: Says he accepts responsibility for Hare's death, then gets upset when Shu actually blames him for it. Mostly because of O.O.C. Is Serious Business; in the past Shu would have made a justification to make Souta feel better.
- I Want My Beloved to Be Happy: Towards Inori.
- Keet: Has shades of this.
- Leeroy Jenkins: While Shu and the others try to plan how to get into a hospital to get vaccine, he and the other "F"-ranked students rush there first in order to prove that their Voids are useful. It's deconstructed since doing so led to Hare's death.
- Mundane Utility: Shu can use his Void to great effectiveness, but Souta can only use it to open cans of food.
- My God, What Have I Done?: He blames himself for Hare's death, as he was the one who told her to heal the car that exploded when Daryl attacked them in the first place. Shu agrees with him and proceeds to punch him repeatedly.
- My Greatest Failure: Causing Hare's death.
- Nice Guy: Unlike Yahiro, it's genuine. Even though his plans often end in disaster, the kid hasn't got a malicious bone in his body.
- Nice Job Breaking It, Hero!:
- In Episode 13, his idea to cheer up the other students by hosting a fair, while admittedly a good one, is what pushes a group of disgruntled refugees to attack the school.
- In Episode 15, the "F"-ranked students and he attempt to retrieve vaccines at a hospital to prove their Voids are useful to Shu. Shu and Hare pursue them, and they all end up getting surrounded by Anti Bodies. The end result is Hare getting killed.
- Not So Different: With Shu. Both of them have problems understanding people, but while Shu became withdrawn and stoic, he became loud and overbearing.
- Red Oni, Blue Oni: The Red Oni to Yahiro's Blue Oni.
- Wrong Genre Savvy: His plans would work in some universes. This one just ends up with Hare getting killed.
Voiced by: Takahiro Mizushima (Japanese), David Trosko (English)
Shu's classmate and a member of the motion picture research club.
His Void is an odd pair of shears with the power to end life.
- Big Brother Instinct: Subverted in that his Void reflects his inward resentment, as he secretly views his brother as a burden.
- Bitch in Sheep's Clothing: Just when you think Shu and he have solved their issues and made up... he sells Shu out to the GHQ.
- Jerkass: Not only is he a jerk to Shu, he also sold him out to the GHQ.
- Knight Templar Big Brother: He's willing to sell out Shu and sell the Norma Gene drug to support his virus-infected younger brother.
- The Man Behind the Man: He is the driving force behind Shu's plans. Shu calls him out on this later. Yahiro denies it (or rather, attempts to justify it), as he claims to genuinely value Shu and wants to save people. Shu doesn't believe him.
- Nice Job Breaking It, Hero!:
- His Void ranking system idea, though logical due to their shortage of supplies and need to properly defend themselves, ends up provoking those ranked useless to prove themselves, the Anti Bodies attack them when they attempt this, and Hare is killed in the crossfire. Good work there.
- He lied to Shu about how Hare died, saying that it was a genomic weapon, not the fact that her Void broke. Later when the other students find out that they can die if their Voids break, they believe that Shu was aware of this all along and rebel.
- One-Hit Kill: Those pliers of his basically give their wielder the Mystic Eyes of Death Perception, allowing them to kill anything with a single blow if they aim it properly.
- Plague Master: His Void blows that don't score a One-Hit Kill, meanwhile, will infect anything they hit with the Apocalypse Virus, so you're pretty much out of luck either way. Yes, this includes machines like Endlaves.
- Red Oni, Blue Oni: Blue Oni to Souta's Red Oni.
- Screw This, I'm Outta Here!: Very pointedly failed to lift a finger during Arisa's coup, instead concentrating on helping with the evacuation effort.
- Ship Tease: Episode 13 implies that he reciprocates Kanon's feelings. Either that, or he was just being nice. Very, very nice.
- The Spock: Brings a harsh dose of reality to the school after the lockdown goes into effect. Even since then, his emotions seem to be completely under his control; the one time he has displayed overt emotion since was a calculated gesture to get Shu elected Student Council President.
- The Stool Pigeon: Of the Betrayer Barry variety. He ends up selling out Shu to secure treatment for his sick little brother. Especially jarring since Shu was under the impression that they had successfully talked over their differences.
- Well-Intentioned Extremist: His days selling Norma Gene to pay for his brother's treatments, and likewise, the Void Ranking system. He knows there aren't enough resources to save everyone, thus the Void ranking system.
Voiced by: Shuuhei Sakaguchi (Japanese), Josh Grelle (English)
A student who first appears after the Lockdown and is somewhat of an instigator of violence.
His Void is a glove that stops firearms.
- Asshole Victim: It was technically his willingness to quickly shift his allegiance from Shu to Gai that ultimately leads to his death. Even so, the guy was a manipulative bastard and a pervert before his death.
- The Bully: He's a jerk who loves to take advantage of girls.
- Faux Affably Evil: Comes off a lot more collected than his companion, but he is just as insane.
- Four Eyes, Zero Soul: He wears glasses and is a villain.
- Irony: His Void neutralizes firearms, but he himself carries a gun to oppress others.
- His first on-screen act was the Attempted Rape of Ayase.
- He takes advantage of Arisa twice in Episode 17.
- Karmic Death: He is killed by Gai after shifting his allegiance from Shu. He also attempted to take advantage of Ayase, Tsugumi and Arisa.
- Kick the Dog: Along with Sudou, he attempts to rape Ayase and Tsugumi and later he takes advantage of Ayase.
- Manipulative Bastard: Introduces strife into the school in order to seize control.
- Out-Gambitted: He really didn't factor Shu into his plans.
Voiced by: Tomoyuki Higuchi (Japanese), Christopher Bevins (English)
Nanba's henchman and a student who first appears after the Lockdown.
His Void is a meteor hammer that can electrocute people.
- Asshole Victim: Along with Nanba and Ritsu, it was technically his willingness to quickly shift his allegiance from Shu to Gai that ultimately leads to his death. Even so, the guy was a pervert and a huge jerk even before his death.
- Evil Redhead: He has red hair and is a villain.
- Jerkass: Sudou's just a plain unpleasant individual all-around.
- Karmic Death: He is killed by Gai after shifting his allegiance from Shu. As with Nanba, he also attempted to assault Ayase and Tsugumi in fron of the entire school.
- Kick the Dog: He and Nanba take advantage of Ayase and Tsugumi.
- Rape Is a Special Kind of Evil: He's sexually harassed Ayase twice already and would've gone further if he wasn't stopped.
- Those Two Guys: He is always seen as a couple with Nanba.
Voiced by: Minami Tsuda (Japanese), Carli Mosier (English)
A student who works together with Miyabi.
Her Void is an electrified short blade.
- Asshole Victim: It was technically her willingness to quickly shift her allegiance from Shu to Gai that ultimately leads to her death.
- Curtains Match the Window: She has matching brown hair and brown eyes.
Voiced by: Akeno Watanabe (Japanese), Kara Edwards (English)
A student who works together with Ritsu.
Her Void is a scythe.
- Berserk Button:
- She does not like Argo's dismissive attitude towards Shu.
- Gai sacrificing her friends, namely Ritsu, sends her into a Roaring Rampage of Revenge.
- Character Death: She dies trying to avenge Ritsu's death.
- Fangirl: According to Ritsu, she idolizes Shu.
- Heterosexual Life-Partners: With Ritsu.