The Ryunka
Ryunka
Voiced by: Maaya Sakamoto (Japanese), Brina Palencia (English)
:
Possessing Sayaka
Partially matured
A parasitic alien bioweapon that Geega smuggled into Earth for Shyalaman. It is at the center of his twisted plan to exterminate most of the human race.
- Demonic Possession: It requires a compatible host before it can unleash its power.
- Eldritch Abomination: The Ryunka's incomplete state is a four-legged monstrosity protruding what appears to be human arms in its underbelly.
- Literally Shattered Lives: It glasses anyone and anything unfortunate enough to be within its radius.
- Omnicidal Maniac: Desires to obliterate the universe at large so it can attain the peace of "absolute silence."
- Puny Earthlings: Ridicules the foolishness of Shyamalan and people like him that came before, stating it cannot understand the stupidity of those seeking to harness its power to destroy others.
- Voice of the Legion: When it has full control over Sayaka, its voice manifests as this.
Katsutoshi Nakasugi
Voiced by: Takayuki Sugo (Japanese), James Grant (English)
- Composite Character: His role as Sayaka's caretaker parallels that of Agata Juuzou in Evolution. On the other hand, his affiliation with Shyamalan is that of her father's. He takes another cue from Juuzou in that he is oblivious to Shyamalan's illicit activities.
- Cruel and Unusual Death: Shyamalan strangled him to death in such a brutal way his fingerprints are left deeply imprinted in Katsutoshi's neck, and his expression of pure horror indicates it was evidently a horrible way to go.
- Honest Corporate Executive: He is outraged when he discovers what Shyamalan has done with his work, to which he rebukes by calling him an idiot who only stifled scientific progress.
- Papa Wolf: He is determined to protect Sayaka from Shyamalan when the latter voices his intentions to his face. Unfortunately, he evidently didn't put up much of a fight being murdered.
- You're Insane!: When Shyamalan expresses his philosophy and intentions to Katsutoshi, he deems him completely insane.
Shoko Kagami
Shoko Kagami
Voiced by: Ayako Kawasumi (Japanese), Maxey Whitehead (English)
- Bratty Half-Pint: Towards Birdy, she acts like a complete brat, causing her no shortage of trouble when she runs around the city in response to her "taking" Nataru from her.
- Curtains Match the Window: Brown hair and eyes.
- Dark and Troubled Past: Her parents and brother were all casualties of the Ryunka disaster, effectively leaving her orphaned until her grandfather takes her in.
- Please, Don't Leave Me: Tearfully begs Nataru to not leave her when they must finally part ways.
Nataru Shinmoyu
Nataru Shinmoyu
Voiced by: Masaya Matsukaze (Japanese), Eric Vale (English)
Click to see him mutated
An Altan refugee on Earth, who works as a nurse and a caretaker for orphaned children following the Ryunka disaster. He is also childhood friends with Birdy and the two have feelings for one another. Unknown to Birdy or his colleagues, however, Nataru hides some very dark secrets under his friendly visage.
- Ax-Crazy: Despite barely holding it together with an outwardly friendly demeanor, Nataru is a contender for one of the most insane characters in the franchise. He is a deranged Serial Killer utterly consumed by sorrow and does not hesitate to inflict extreme brutality on anyone he feels has slighted him.
- Big Bad: Of Decode 02.
- Cain and Abel: The Abel to Valic's Cain, as the latter almost murdered him out of spite as kids. Ironically, reversed as adults, where Nataru is hellbent on murdering Valic while he wants nothing to do with him.
- Childhood Friend Romance: Nataru has this with Birdy, but they keep it low key due to their occupations. By the show's end, she fully reciprocates.
- Cold-Blooded Torture: He inflicts the most heinous torture imaginable on his targets, reasoning they must suffer for what they caused with the Ryunka.
- Death Seeker: He fully intends to die during or after his revenge-fueled rampage.
- Deadly Nose Bleed: As well as bleeding from his eyes, when he begins to overuse his Ixorian powers.
- Face of an Angel, Mind of a Demon: His boyish face and genial demeanor hide a bloodthirsty monster defined by rage.
- Freudian Excuse: As an Altan child, he suffered intense persecution from the populace, exacerbated by his adoptive father's occupation as a hardline Anti-Federation terrorist. His adoptive brother, Valic, resented him for taking away his father's attention and regularly physically and emotionally abused him. Nataru was later caught up in the Central Tower Attacks, witnessing the horror of war firsthand as a kid. After migrating to Earth and living a relatively normal life, his best friend is glassed in front of him in the Ryunka disaster, making Nataru fully believe he can never escape his cursed life.
- Friend to All Children: And harming them is among the fastest ways to set him off.
- Genetic Engineering Is the New Nuke: Nataru is an Ixorian, but he descended from a failed line of supersoldiers experimented with reality warping powers, making him a defective Ixorian.
- Hair-Trigger Temper: While Nataru can keep a decent lid on it, he is frighteningly easy to piss off and very irritable.
- Happily Adopted: For the most part. Though his adoptive father's former involvement in terrorist activities created tensions, Nataru loved Dusk, and his murder is what fully sends him over the edge.
- I Am a Monster: How he feels about himself, and by extension, other Ixorians.
- Incurable Cough of Death: Another result of his terminal illness and overusing pain killers.
- Kick the Dog: His horrific murders of siblings Faroid and Tesera is treated as crossing a line in-universe and out, as they expressed regret and no longer wanted anything to do with their terrorist cell.
- Pink Girl, Blue Boy: When Birdy and Nataru are together, starting back when they were kids, Birdy is usually shown wearing pink and Nataru, blue.
- Power Dyes Your Hair: Nataru's hair turn white when he activates his powers.
- Reality Warper: He has the ability to erratically phase in and out of reality or time and space itself.
- Red Eyes, Take Warning: His eyes become permanently bloodshot after using his powers too much, marking the point where he is inevitably going to die from terminal illness.
- Roaring Rampage of Revenge: Once he finds out the aliens responsible for the Ryunka disaster are hiding on Earth, he embarks on an insane quest of revenge against his father's wishes.
- Sadist: Relishes in the agony of his victims as he tears them apart limb from limb.
- Screaming Warrior: He's constantly shrieking in a bestial rage when he fights Moss and Birdy in the climax.
- Serial Killer: A borderline case, as he systematically hunts down every named agent in the military cell involved with the Ryunka disaster.
- Teleportation: One of his abilities as a Reality Warper.
- Unskilled, but Strong: It's made clear Nataru has little grasp on actually handling his powers, but they're strong enough to where it doesn't matter.
- Used to Be a Sweet Kid: It's hard to believe the vicious maniac now used to be such a meek and sweet kid.
Dusk Shinmoyu
Dusk Shinmoyu
Voiced by: Takayuki Sugo (Japanese), Kent Williams (English)
- Anti-Villain: He may be a criminal and ex-terrorist, but he never harbored any ill will and was well-intentioned in that he was fighting for his people.
- Everyone Has Standards: In the past, he turned down an offer to join Christella Revi, citing her as too extreme even for him. This put him at odds with his son and other resistance fighters.
- Eyes Always Shut: He is never seen with his eyes open.
- Good Parents: To Nataru, as he wanted him to live a happy life away from his upbringing. He is very disappointed when he takes up the path of revenge, but doesn't stop him and understands his anguish. Dusk tried to be this for Valic, but Valic's preference for violence and envy for Nataru irrevocably ruined their relationship.
- Retired Monster: He was once renowned for his vicious effectiveness as a guerilla fighter, but he's since stepped down and poses as an unassuming librarian.
- The Worf Effect: Despite his fame, he is easily murdered by Gatol without any fight.
The Insurgents
The Insurgents
Voiced by: Gatol: Atsushi Ono (Japanese), Mark Stoddard (English), Moss: Yuko Kaida (Japanese), Lydia Mackay (English), Valic: Shintarō Asanuma (Japanese), Chris Patton (English), Faroid: Kōki Miyata (Japanese) Colleen Clinken Beard (English), Tesera: Ryōko Shiraishi (Japanese), Monica Rial (English)
A cell of the Federation Army that was involved with smuggling and experimenting on the Ryunka on Earth, ostensibly to better combat the Alliance. After the Ryunka disaster, most of them were arrested but subsequently freed by Moss and Gatol. Regrouping on Earth, their plans on restructuring come to an abrupt pause when they are individually hunted down by a mysterious Serial Killer.- Alas, Poor Villain: Tesera and Faroid die literally crying and pleading for their lives, and of the group, were undoubtedly the least heinous.
- Asshole Victim:
- Rianshl and Agrazume were smug, racist assholes completely unrepentant over their role in the Ryunka disaster and murdering thousands. Their deaths, while brutal and horrific, are arguably deserved.
- Gatol murdered Dusk over simply not cooperating and procured a nuke for further destruction on Earth. There's no sympathy to be had when Moss betrays and murders him.
- Cain and Abel: Valic to Nataru in their childhood. Ironically, reversed given that Valic is fearing for his life as Nataru is hunting him down for nothing he personally did to him.
- Cruel and Unusual Death: Any of them caught by Nataru is subject to this, being deliberately torn apart limb from limb before being smashed into paste.
- Dirty Coward: What Gatol claims of Tesera when she severs all contact and goes into hiding, although she is very justified in fearing for her life.
- Dwindling Party: As they are individually hunted down by Nataru. As morale drops, some members go their separate ways.
- Even Evil Has Loved Ones: Tesera deeply mourns Faroid's passing.
- Even Evil Has Standards: After Rianshl is murdered, all of them are extremely disturbed and often left speechless by the brutality of whatever is hunting them down.
- Eye Scream: Nataru gouges one of Gatol's eyes out in his brutal fight with him.
- No Body Left Behind: To cover their tracks, they are implanted with chips that disintegrate their bodies should they perish.
- Large and in Charge: Gatol, the leader of the group, towers over everyone else.
- Screw This, I'm Outta Here: Tesera cuts all contact with the group and tries to live a normal life in hiding on Earth. It doesn't last long before Nataru finds her...
- We Hardly Knew Ye: Rianshl, Agrazume, and Faroid are quickly killed off before establishing much personality.
Moss
- Adaptational Badass: Neith of the manga wasn't much of a fighter. When faced with Birdy for her crimes, she opted to flee. Later on, she was detained by human forces (albeit, the JSDF) while hiding on Earth. Moss, by comparison, is such a fierce fighter she outright defeats Birdy in single-combat and holds her own against a fully crazed Nataru.
- Attempted Rape: Some idiotic humans attempt this on Moss when she's alone. Although Gatol scares them off with a glare when he arrives, they're very lucky they got off that easily.
- Blood Knight: She lives for the thrill of combat, and it's taken literally on one occasion she forgoes her human disguise to maul at necks.
- Combat Sadomasochist: Tells Nataru to come with everything he has in their final battle and relishes in every aspect of it, regardless of her being pummeled.
- Dark Action Girl: By far one of the most badass women in the franchise, going toe to toe with Ixorians despite not being artificially empowered in any way.
- The Dragon: Directly answers to Gatol and holds a level of authority over others in the group.
- Expy: Moss is a direct stand-in for Neith Washgam from the manga, being of the same species and having the same role as a military maverick conspiring to illicitly increase their influence on Federation politics.
- In Love with Your Carnage: Grows out of her disgust for his actions and instead becomes enamored with Nataru's brutality and strength.
- Taking You with Me: Albeit, somewhat half-heartedly, she sets off the nukes she stole after losing to Nataru, hoping to take him and Birdy with her.
- The Last Dance: After being rejected by Revi despite killing Gatol as requested, Moss decides her life no longer has meaning and she will end it in one last glorious battle with Nataru.
- Women Prefer Strong Men: She literally says this when betraying and murdering Gatol, saying he has grown too old and weak.
