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An Ordinary High-School Student who suddenly finds himself getting chased by several factions, all thirsting for his blood. He later realizes that he's appeared in this strange video of him murdering someone while evilly proclaiming himself as the "Colorless King" (which had been kindly broadcast through the entire city), even though he doesn't remember doing such a thing.
Acting for Two: Daisuke Namikawa voices both Shiro normally as well as the Shiro in the video who kills Totsuka, but both of them sound drastically different.
Ambiguously Bi: He has blushed many times around Kuroh and even teasingly called him his wife, but he's also blushed at Neko when he saw her naked human body for the first time and the two share a few affectionate moments that are borderline romantic.
Amnesia Danger: Remembering that his true identity was the Silver King all along might have helped him a lot in earlier episodes when he had no idea why people were out to kill or capture him. Kuroh, in particular, could have been convinced sooner of his innocence.
Amnesiac Hero: He does not remember who he is or what his involvement in Tatara's murder may be. All his memories from the moment he came to school were fabricated with Neko's powers. He finally seems to have recovered his memories in Episode 11.
Amnesiacs Are Innocent: Even when he first arrived in the school without any memories, he was still friendly to Neko which caused her to warm up to him immediately.
Animal Motifs: The way Shiro holds his vivid pink parasol behind him may have been designed to evoke Peacock imagery. This is mostly notable because as a symbol, the peacock connotes royalty, refinement, spirituality and holiness, immortality and incorruptibility, and enlightenment and awakening. The peacock's defining nature is achieving integrity and beauty when one discovers and shows who they really are. In western culture, the peacock also symbolizes the heavens and stars. The relevance is ridiculously self-explanatory in the context of the latter half of the show.
Authority Equals Asskicking: Shiro (as the First King) is definitely not a fighter. Nevertheless, he effortlessly halts the pitched battle between Reisi and Mikoto, both of whom are powerful Kings and fighters.
Blatant Lies: His attempts to provide an alibi are pretty believable...unless you talk to anyone who knows him.
Combo Platter Powers: As the First King, he displays immortality, control of gravity within his sanctum, and the ability to alter other people's biological makeup. If he uses the latter power to synch other people's biology to his own, he can lend them similar influence over gravity. He also seems to have actual psychic capabilities, being able to easily outmaneuver and trap a Body Surfer who does use psychic powers note In this case, he doesn't seem to have telepathy and requires someone else to initiate the psychic conflict.
Consummate Liar: With the exception of the Line-of-Sight Name scene in Episode 2, where he actually stuttered in the middle of a lie (to show the viewer that he is lying), he's a pretty damn good liar.
Eating Lunch Alone: By choice rather than isolation in Episode 1. Shiro is actually quite popular with other students who willingly share some of their lunch with him, but Shiro isn't particularly close to any of them and is happy eating lunch alone on the school roof with only a cat for company.
Evil Sounds Deep: The "Shiro" in the video who killed Totsuka had a way deeper voice than Yashiro's usual tone.
Fake Memories: Revealed in Episode 6 that his memories about his past seem to be entirely fictitious. Shiro admits this himself when he says every time he tries to remember something, the details wouldn't match up. Neko is later revealed to be the one who has been creating fake memories with her powers.
First Name Basis: Shiro starts calling Kuroh by his first name by the end of Episode 3, as they seem to have made an alliance.
Go Out with a Smile: His last expression is a peaceful smile as he closes his eyes after Mikoto blasts a hole through his chest with his powers.
Go Through Me: When he stands in front of Neko as Kuroh is preparing to cut them both down in Episode 4. His simple act of doing so, however, is enough for Kuroh to hesitate and then back down.
Gratuitous German: The moment he recalls his memories as Adolf K. Weissmann, he starts speaking in German for a while, and then continues to pepper his speech with German words in the following episodes.
Gravity Master: His powers can let him momentarily synchronize the biological wavelength of other people with his own, enabling them access to his sanctum's manipulation of gravity.
Guile Hero: Is able to think quick enough to invent a story about his (non-existent) sick little sister on the fly to escape from Kuroh, as well as to set two people who were after his blood, who didn't trust each other, against each other with a careful choice of words. He is also very charismatic and popular, and in Episodes 7 and 8 it is clearly shown just how manipulative he can be with the situation when the need arises, to the extent of even tricking Munakata twice.
Hair Contrast Duo: He's playful, innocent-looking and shrewd in contrast to the serious and uptight Kuroh. No wonder their hair colors contrast.
He's Just Hiding: In-universe (and likely out- as well). After Shiro lets Mikoto kill him, which obliterates the entire island, Neko and Kuroh find his parasol but not his body. Neko clings to the belief that as a King, he might have been powerful enough to survive the blast. Kuroh, recalling that Shiro's power as the first king was explicitly invulnerability, comes to agree.
Heroic Albino: Has white hair and really pale skin and he's the hero of the story and overall a really nice guy. Of course, his lookalike in the snuff video weighs it against Evil Albino.
Heroic Sacrifice: He pulls off one in order to let Mikoto destroy the Colorless King in his own body instead of Kukuri's.
I Am Who?: Certainly not who he thinks he is. Everyone believes him to be the next (technically the current) Colorless King. He is in fact an amnesiac Adolf K. Weismann, the Silver King, in the body of a 17 year old boy instead of his normal one, due to attempted possession by the spirit that appears to be the actual Colorless King.
Identity Amnesia: He does not remember who he is or where he came from. His only memories are Neko's fabrications. However, he regains his identity in Episode 11 after getting stabbed by the Colorless King and finally remembers he is Adolf K. Weismann.
Kid Hero: Subverted. He's actually Adolf K. Weismann in a body a 17-year-old boy
Kindhearted Cat Lover: He eats lunch with a kitten and keeps her hunched on his arm all the time, even when running errands outside campus.
Laser-Guided Amnesia: He can't remember anything beyond waking up in the school after crashing through the roof, and then meeting Neko and Kukuri for the first time. However, after Neko uses her powers to help recover his memory further, he soon recalls clinging to the edge of an airship and then getting kicked off it by a silver-haired man. In Episode 11 though, he finally remembers everything.
Leitmotif: "Shiro #1" and "Shiro #2", both calm songs with similar tunes. They are also remixes of the K Main Theme. And then also "Shiro #3", which is noticeably darker than the first two.
Line-of-Sight Name: In a few seconds of just glancing around at his environment, Shiro spins out a yarn about having an ill younger sister who he needs to write a letter to, and quickly does it again when he needs to think up a name for her and spots a nearby flier. In Episode 7, it's revealed that even his name "Yashiro Isana" came from a poster he saw on a wall of the school the very first night he arrived there.
Loss of Identity: In Episode 6, when he realizes "Yashiro Isana" may never have actually existed. Confirmed in Episode 11 when it's revealed "Shiro" never existed—it was actually Adolf K. Weismann (with amnesia) all along.
Luminescent Blush: Blushed twice so far when getting close to Kuroh, and once when he was utterly embarrassed at seeing Neko appear naked.
Meaningful Name: The kanji for "Yashiro" itself means a firm or an office, which isn't really meaningful, but his nickname "Shiro" can be written as "white".
The name 'Isana' comes from the Shinto deity Izanagi, who was credited with the creation of many other Shinto deities. Shiro is the Silver King, whom Munakata referred to as the king of origins due to him being responsible for the birth of other kings.
Mistaken for Murderer: A guy who looks exactly like him is seen murdering a member of Homura. Shiro insists it's not him and that he knows nothing about it. He's later proven right in Episode 11. The real killer is revealed to be the Colorless King who was controlling Shiro's body at the time.
Mysterious Past: He claims he's just an ordinary person who came from a happy family and is living away from them to attend a high school, but he soon finds out that the house he thought he lived in doesn't even exist.
Ordinary High-School Student: A kid with no powers, fighting skills or understanding of the clans is swept in their fight. He is not as ordinary as he seems.Double subverted in Episode 11 which implies the original body of Shiro really did belong to an ordinary high school student who had the misfortune of getting his body taken over first by the Colorless King and then the Silver King.
Please Kill Me If It Satisfies You: He pulls this on Kuroh intentionally in Episode 2, so that the latter may feel bad and stop trying to kill him. It doesn't work. In Episode 6 he again offers Kuroh the chance to kill him, for real this time, after realizing his entire life is a lie and he no longer knows if he committed the murder or not.
Power Floats: The Silver Sanctum he can manifest enables him and his clansmen to casually defy gravity.
Power Glows: Shiro starts emitting a silvery glow whenever he uses his powers as the Silver King.
The silly things that Yashiro makes up when Kuroh is trying to kill him sound as if he doesn't care very much, but his shaking eyes clearly show that he's frightened.
In episode 4, when he opened the door of his closet to find a bloodied shirt from the night when Tatara was murdered.
Sparkling Stream OfTears of Fear: Again, when he's escaping from the HOMRA thugs, his carefree behaviour makes him seem pretty chill about it all, but he's clearly scared as seen from this.
Supernatural Gold Eyes: It is unclear what he is, or if he possesses any powers, but the fact that he's hinted to be the Colourless King is a sign. Later, he turns out to be the Silver King.
Super Toughness: He freefalls hundreds of feet onto concrete without any ill effects thanks to his immortality.
Taking You with Me: In the final episode he traps the Colorless's King soul inside his body and manages to reach Mikoto in time, who he then urgently asks to kill him before the Colorless King can free himself. Mikoto happily obliges by punching a hole right through Shiro's chest, thus killing them simultaneously by destroying the body they were in.
The Trickster: Tricks are the only ways he can escape all the people trying to capture or kill him, as he's not much of a fighter. He lies his way out well enough.
Unfazed Everyman: Despite seeing people use magical powers while either attacking or helping him, Shiro just takes it all in stride.
Subverted when it's revealed that as the Silver King, he is anything but normal, though one might argue that he's very much an everyman before he regained his memories.
Unperson: When HOMRA and SCEPTER 4 investigate Ashinaka High for clues on Yashiro, they found no trace of his existence - Saruhiko searched the school records for him and nothing turned up, and Misaki questioned Shiro's friend Kukuri about him and she genuinely did not know who he was. Every aspect of his current identity was in fact made up and projected by Neko onto the rest of the students, which is why there are no records of a "Yashiro Isana" at all.
The Watson: He has no idea what is going on, and has to ask Kuroh some questions about the kings and clans to find out why there are people are after him.
Kuroh "Kuro" Yatogami
"In compliance with my late master's dying wish, I will slay the evil king!"
A stoic young man, vassal of the former 7th King, Ichigen Miwa. His goal is to complete his master's dying wish and defeat the "evil" King. Believing Yashiro to be said King, he saves him from the members of HOMRA to kill him himself.
Cassette Craze: The voice recorder he carries around has been used to record practically everything philosophical his former master once said to him. It even gets lampshaded by Shiro when he first finds about it:
Crazy-Prepared: Learned how to fly a helipcopter. In his own manga it's hinted that his master trained him to learn all sorts of things at a young age despite living in the mountains for most of his life.
Dark and Troubled Past: Lived in a happy family until his parents died when he was 5. Was handed over to some relatives' house, before they also died from a fire. Nobody else would take him after that, and he was taken in by some really distant relative who was an alcoholic and gambler, who abused Kuro and wouldn't even let him go to school. Eventually that person also disappeared somewhere, and Kuro realized he'd been finally abandoned. He left the house and wandered around until he almost died in the snowy mountains before Ichigen found him.
Defrosting Ice King: Goes from cold and aloof swordsman trying to kill Yashiro to his close and loyal friend and clansman.
Flash Back Echo: When Shiro moves in front of Neko as she is trying to defend him from Kuroh, Kuroh flashes back to his childhood when Ichigen Miwa protected him while he was trying to defend his master. It causes him to hesitate in his strike and give Yashiro a second second chance.
Hidden Heart of Gold: He's stoic and seemingly cold, but he is actually really moved by Yashiro's fake sob story about his imaginary little sister.
Hitman with a Heart: He's on the mission to kill the evil Colorless King, but he's not a heartless assassin, as seeing when he was willing to do Yashiro a last favor for the sake of his "ill little sister" and later he was willing to make Yashiro a nice last meal.
The Jinx: He was treated as this when he was young. His parents died in a car accident when he was 5, he himself spent over 2 weeks in the hospital for rehabilitation. He was eventually handed over to his aunt and uncle, whose house burnt down soon thereafter, leaving him alone again. All his other relatives would not take him in because they believe that he was a source of misfortune.
Katanas Are Just Better: He prefers katanas over other swords or firearms, as they symbolise his status and attitude as a samurai.
Meaningful Name: The first kanji in his name means "dog", and the pronunciation "Kuro" alone means "black". This possibly contributes to his title as the Black Dog.
My Master, Right or Wrong: When we first meet him, Kuroh is very willing to kill Yashiro for a murder he may or may not have done without hesitation just because of his previous master's request that he kill the next Colorless King if he turns out to be evil.
Sugar and Ice Personality: He looks distant and cold, but is actually very loyal and kind to those whom he deems worthy of his respect and trust, like Ichigen Miwa and Kukuri. Later he starts getting close to Shiro and Neko.
The Worf Effect: After beating Misaki twice without breaking a sweat, he gets totally owned by Reisi in episode 7 and Mikoto casually throws him aside in episode 11 without a glance, and easily shrugs off all his attacks. This is justified considering that they are Kings, episode 12 prove this as he proceed to curbstomp many Homra and SCEPTER 4 fighters.
Reisi and Mikoto's fights are interesting cases, as Kuroh is aware that they could wipe him off the face of the earth and is clearly afraid of them for that. As a result, he strikes a balance between fighting too weakly to provoke them, but just well enough to warrant getting his ass kicked and thereby serve as a delay. Hence the reason he doesn't draw his sword.
Would Hit a Girl: He was prepared to run through Neko for protecting Shiro, and fights against Seri without holding back.
In episode 11, he also doesn't hesitate to pin down a possessed Kukuri after she attempted to stab Shiro.
Genki Girl: Extremely playful and energetic, even when someone is after Shiro's life!
Godiva Hair: She has no clothing when she switches from her cat form to human form. Her long hair covers the naughty bits.
Go Through Me: Played for Laughs. When Kuroh prepares to cut down Shiro in his room, Neko jumps in front of Shiro to protect him. Seeing as how she was naked at the time though, Kuroh reacts to the sight by blushing and then turning his face away in embarrassment, affording Shiro an easy getaway.
Hair Color Dissonance: Neko either has really light pink hair, pink hair with white highlights, or white hair with pink shading. It could even be seen as pale lavender. It is as light in color as Shiro's white-with-grey-shading hair (which is really impressive considering it's white), but it's often interpreted in fan-art and cosplay and even some promotional artwork as bright cotton-candy pink (compare her portrait in this character page to the image on the main page). Of course, it doesn't help one bit that the color seemingly changes from scene to scene depending on the lighting.
Idiot Hero: She nearly blows her, Shiro, and Kuroh's cover big time because she was bored. And she did so by yanking around the steering controls for the helicopter they were in.
Inexplicably Awesome: Where she got her (very unique) powers is left even more mysterious than the rest of the powers in the series, which at least have a consistent shared origin. There are only three other characters who are Strains. Two of them are not in the actual show, and the other has less extravagant powers.
Invisible to Normals: Neko can run around naked in her human form without anyone noticing, and when she bumps into someone they're not sure what happened. It's part of her power to manipulate people's senses.
Mark of the Supernatural: She has a green left eye and blue right eye in her human form, which makes her look far from normal. She's not, of course, and is quickly identified as a Strain, an individual with supernatural powers that were not given by a King. Her specialty is creating illusions and modifying the memories of the people around her with her presence.
Master of Illusion: Can easily mess with the five senses of her victims, thus making it seem as if she could create illusions.
Ms. Fanservice: The time she spends without clothing includes even the ending theme.
Memory Wiping Crew: Revealed to be the one responsible for altering the memories of the people around her, including Shiro and the students at the high school, making them all believe that people they met for the first time were longtime friends. The memory-changing effect doesn't seem to work with phones, though.
Naked First Impression: Suddenly turns into a human on Shiro's bed. Naturally flustered, he offers his jacket.
Also known as the Red Clan, HOMRA is a gang where bonds run thicker than blood. All the members have the ability to control fire. Led by Mikoto Suoh, the Red King, their headquarters are located in a bar owned by Izumo Kusanagi.Below are tropes that apply to HOMRA as a whole:
Achey Scars: All the clansmen's tattoos glow an angry red and start to hurt when Mikoto was about to die.
Badass Crew: They like fighting, and are incredibly good at it as a team.
Band of Brothers: The clansmen share bonds that run deeper than blood, and killing one of them is a surefire way to provoke an extremely violent response. Additionally. it's assumed (though not stated) that only men have joined HOMRA, except for Anna who doesn't even possess fire powers like the others.
Playing with Fire: Fire powers are part of the package. Being initiated in the clan requires passing a test where Mikoto's flame does not burn you.
Red Oni, Blue Oni: HOMRA is disorganised, fiery and bonds mean everything to it. In contrast, SCEPTER4 is disciplined, everyone wears the same uniform, and the relationships within the clan seem to be professional instead of friendly.
Revenge Before Reason: None of them care about the circumstances behind Totsuka's murder or how much damage they do in the process of killing his presumptive murderer. Or, for that matter, that they're attacking another king.
The 3rd King, also known as the Red King. A stoic man of few words, he is the leader of HOMRA. Mikoto is captured by SCEPTER4 in the beginning of the series.
Animal Metaphor: When fighting an enemy who tries invading his mind in Episode 9, Mikoto is represented by a lion made of flames that easily repels the enemy.
Animal Motifs: The Lion. Very apathetic, always sleeping, but incredibly powerful and naturally charismatic. When he's around, it's obvious who's in charge. His hair even looks sort of like a lion's mane.
Authority Equals Asskicking: Comes with being a King. He is the most powerful fire user and can wipe SCEPTER4 sans their King with little effort.
Badass Boast: In an episode preview, probably the source of HOMRA's motto.
Mikoto: "I won't leave a trace. Neither blood nor bone nor ash will remain."
Bad Dreams: According to the prequel manga, he suffers from recurrent nightmares.
Brooding Boy, Gentle Girl: A male/male version with Tatara. This characterized his relationship with Tatara who was the only one able to reassure him about his powers and let him feel relaxed whenever he was feeling stressed out.
Bullet Dodges You: It's shown in the manga that bullets can't even touch him thanks to his powers being able to block them.
Burning with Anger: Literally in Episode 6 when he remembers what Tatara's murderer said in the video clip after shooting Tatara.
Death Seeker: Relentlessly pursues Tatara's killer despite the growing deterioration of his Sword of Damocles and refuses to back down peacefully from his attack on the school in order to force Reisi to kill him. In the final episode, after he successfully completes his revenge by ending the Colorless King's life with his own hands, he simply opens his arms out and embraces death at either Reisi's hands or his own falling Sword of Damocles.
Died in Your Arms Tonight: After Reisi runs through Mikoto with his sword, Mikoto slowly leans against him and hugs him briefly, while saying something to him, before slumping to the ground if Reisi didn't catch him.
Expy: Of Spitfire, from Air Gear. They both have red slicked-back hair, control fire and are kings. They're even voiced by the same voice actor.
Famous Last Words: "I'm sorry...Anna. I won't be able to show that lovely red anymore."
Fiery Redhead: Downplayed. While he has an outwardly taciturn and cool personality, he's also said to possess quite a fiery temper and has a tendency towards violence.
Foe Romance Subtext: Has tons of it with Reisi starting with their suggestive, almost flirtatious conversation in prison, which is later followed up by Reisi leaning down so close to Mikoto at one point that their faces are only inches apart.
A Good Way to Die: After avenging Tatara, he smiles peacefully and spreads his arms wide open as he waits for his death at either Reisi's hands or from his own Sword of Damocles as it comes crashing down above his head.
Mangst: Is implied to be suffering heavily from this after Tatara's death, but since he doesn't emote openly he only has troubled dreams about it instead. The fact that his powers are also going out of control adds more to his burden.
Papa Wolf: He is very protective of his gang members and treats them as if they were family members. Hurt one of the HOMRA members, and he will hunt you down. He shows a bit of his Papa Wolf side at episode 9 when the Colorless King called him through the phone and provokes him by threatening the life of many of the HOMRA members and even raping Anna.
Person of Mass Destruction: It's mentioned that, when he's serious, he's on the level of a natural disaster. In the last episode he nearly destroys his surroundings after his Sword of Damocles begins to fall.
Playing with Fire: The color of the fire he uses is always bright violet or pink as well.
Power Degeneration: His Weismann level is reaching its limit, and in Episode 6 his hand is shown to be charred black by his own powers, showing his loss of control over his powers. His Sword of Damocles is also in a state of decay. By the season finale, he finally exceeds his Weismann level after killing another King, and his Sword of Damocles nearly falls on him (which would have triggered a Super Power Meltdown) if Reisi didn't kill him before that could happen.
Psychic Block Defense: Episode 9 implies he uses this to defend his mind from the intrusion of Tatara's killer and drive him out again.
Reluctant Ruler: He doesn't seem too fond of being a king as shown in Episode 6 when he wonders aloud why he had to become one.
Revenge Before Reason: He wants to get revenge for Tatara more than anything else and is willing to endanger himself, his clansmen, and even the entire city to seek out the murderer.
Self Restraint: Mikoto willingly surrenders to SCEPTER 4 at the start of the series so he could be closely watched by another king who would be the only one able to stop him in case he undergoes a Super Power Meltdown. As a result, he stays imprisoned for eight episodes straight (or nearly half the season). However, by Episode 9, he breaks out of the prison in seconds as soon he finds out where Tatara's killer has been hiding all along.
The Stoic: You'd expect fiery powers to be accompanied by a fiery personality, but unless he gets angry, he's very laid-back and doesn't talk a lot.
Suicide by Cop: He forces Reisi to kill him before his Sword of Damocles can fall completely to the ground and wipe out everyone around him.
Super Empowering: As shown in the prequel manga, he can induct someone into his clan and bestow his powers onto them if they pass a dangerous test (wherein they must shake his hand while it's on fire) to prove their worthiness.
Supernatural Gold Eyes: As a king, his eye color seems to indicate both his powerful status and supernatural powers. However, the feline quality of his gold eyes is also evoked by Izumo who comments that Mikoto probably would be happier if he'd been a lion living in a savanna.
Together in Death: His death can be seen as a way to reunite with Tatara since Mikoto stayed quite depressed for most of the series after Tatara was murdered, and finally seemed to be at peace when he avenged him upon which he willingly accepted his own death.
Tragic Bromance: Was extremely close to Tatara and his death had a tremendous psychological impact on Mikoto, since it continues to affect his behavior for the entire anime up until his own death.
Tsundere: Shows shades of this, especially around Tatara and Anna. Less in a "baka I didn't do that for you" sort of way, but more in the "I'm calling you dumb and telling you to take care of yourself but acting like I don't give a crap" way.
Wake Up Fighting: After Eric tries to assassinate him in the manga. The moment he touches him, Mikoto instantly awakens and nearly roasts him alive with his powers if he didn't happen to miss and burn a hole in the nearest wall instead.
Worthy Opponent: To Reisi. As shown in the conversation between him and Reisi in one of the radio dramas, they may hate each other but still respect each other as Kings and understands each others' loneliness as Kings.
Izumo(completely in English): This is the guy we are... looking for. See? Look at the gun he has - it's from your place. Don't you know anything about it? (smirk) Relax... and take your time to remember.
The only female member of HOMRA, Anna is a little girl who is only eleven years old. Usually in the company of Mikoto, she doesn't talk a lot. She can detect people and read their minds using her red marbles. She succeeds Mikoto Suoh as the new Red King.
Animal Metaphor: Upon awakening as the Red King, a phoenix emerges from Anna's flames; this could perhaps symbolize the rebirth of Homra under a new king.
Sugar and Ice Personality: Comes off as a very distant and quiet Emotionless Girl, but Anna actually just keeps her stronger emotions locked up so she doesn't hurt anyone. Deep down, she's a caring and sweet girl.
Telepathy: She can read minds by looking at someone through her red marble.
Token Mini-Moe: The only child member of the cast, in a clan otherwise full of adult males.
Berserk Button: Do not insult Mikoto in front of him. Or HOMRA, for that matter. And, to a lesser extent, calling him by his first name. Saruhiko pushes all of these buttons painfully well with just one sentence that triggers him into Unstoppable Rage.
Cannot Talk to Women: He has trouble communicating with the female students in Ashinaka High, probably due to having never been around girls apart from Anna, who is still a child.
Cool Board: He uses his skateboard to pull crazy acrobatic stunts during fights.
Does Not Like Spam: Does not like milk as stated by Saruhiko, who apparently had to drink all of that for him back in school. That's a possible explanation for his height... Though he eventually could, unlike Saruhiko's inability to eat his vegetables, which Misaki considers a metaphor for why he could "move on" and Saruhiko could not.
Lethal Chef: Subverted in one of the radio dramas, where Misaki wanted to cook something for Izumo, and Rikio was absolutely positive that his cooking would be absolutely atrocious (the resulting food apparently looked rather gross, too). It was surprisingly delicious. Although, that may possibly just signify a One-Note Cook.
Made of Iron: He's almost perfectly fine even after Kuroh elbowed him roughly in the gut and threw him into the air, as well as when he crushed him with a giant bulletin board ten times his size.
A Man Is Not a Virgin: He gets mocked this way by Saruhiko who makes fun of his virginity. It was more of a reference to the fact that he Cannot Talk to Women instead of the literal sense of the word, though.
Manly Tears: He's usually tough and looks thuggish, but he was very emotional and cried during Tatara's and Mikoto's deaths.
The Napoleon: Short, brash and childish, and has a height complex.
Oblivious to Love: Even after Saruhiko left Homra due to jealousy and his desire for Misaki to notice him, Misaki fails to realize the true reason behind Saruhiko's actions and simply thought of Saruhiko's betrayal as him turning into a different person from before. If Saruhiko spelled it out for him he still wouldn't get it.
Older Than He Looks: He's 19, but everyone in HOMRA calls him the affectionate "Yata-chan" in regards to his small stature and childish appearance. In the Drama CD, Saruhiko also comments on how he apparently looks more like a middle school student.
Tsundere: A huge type A by default especially around Saruhiko. With most members of HOMRA though, he's Type B.
Useless Accessory: He wears his headphones around his neck all the time. Also the jacket tied around his waist that he never seems to wear.
We Used to Be Friends: With Saruhiko. They even joined HOMRA together, and the latter's betrayal obviously hurt Misaki. It is show multiple times that it still hurts and that he has hope left that his best friend is still in there somewhere. Also, his awesome wristwatch was a gift from Saruhiko and that he didn't toss it means he doesn't actually hate him.
The Worf Effect: Misaki enters the show spectacularly by beating up tons of mafia goons single-handedly. He then proceeds to get owned by Kuroh twice, and then partially owned by Saruhiko before Seri butts in.
"Y-Yata, stop! What's the point of fighting this monkey here?!"
Made of Iron: Misaki threw him, head-first, into Izumo's bar counter, and there was a sickening crash. He came back unscathed.
Non-Standard Character Design: He's the only male character who doesn't conform to the pale, slender Bishonen-style aesthetic. Later subverted when it's revealed that he can actually change from looking fat or skinny according to the different seasons. During wintertime, he's fat and bearded, but in summer when he loses weight and shaves the beard it's shown that he's actually Beautiful All Along.
"Hello there. I'm here to take some pictures of the night-time scenery, but what about you? My name is Tatara Totsuka, what's yours?"
Camera Fiend: In the manga especially, he was shown to love recording things with his camera. The tape which he took seconds before his death displayed the face of his murderer, who looked suspiciously alike to Yashiro.
Catch Phrase: "Don't sweat it. It'll will work out somehow."
Nice Guy: Easily the nicest person in HOMRA, whether it came to his clansmen or strangers. He even treats Saruhiko as if the betrayal had never happened. For example, telling him how Misaki is doing or sewing a doll that looks just like him.
Non-Action Guy: In fact, he's said to be the only member of HOMRA who never fought or used violence.
Plot-Triggering Death: His death is what causes the HOMRA clan to seek out his murderer who they believe is Shiro.
The Pollyanna: Is always optimistic no matter what the situation.
Posthumous Character: Tatara is already dead by the start of the series, so we learn about him through flashbacks and supplementary materials.
Protectorate: For Mikoto. It's outright stated in the manga that hurting Tatara is a quick way to press the Red King's Berserk Button.
Sacrificial Lamb: His death is used to establish his killer's cruelty and madness .
Weak, but Skilled: Totsuka is hands-down the weakest HOMRA member, yet his control over his flames is second to none, being able to shape it into various forms at will and even pick a lock silently by precisely burning the necessary parts.
We Hardly Knew Ye: Little is given away about Tatara in the anime, and his death is acknowledged after six chapters in the manga. Flashbacks are used to flesh him out.
Subverted in the prequel manga which has him as a main character, up to the final chapter where he dies.
Wide-Eyed Idealist: He truly believed Mikoto would one day make a true and great King, so he became his first follower. He also avoided violence.
"I have become powerful. I can fight on my own, now..."
A young man who joined HOMRA for the single wish of gaining the power to save his childhood friend from being used by drug dealers, but later realizes there is more to HOMRA than just power, and becomes fiercely loyal. He is the main character of the first two chapters of the manga K - Memory of Red.
Anger Born of Worry: After finding out that Shouhei is going to endanger himself by breaking into a drug dealing organization alone, Bandou immediately sets out to follow him and the first thing he does when he finds Shouhei is punch him in the face and then yell at him.
Ascended Extra: Like Shouhei, went from a reoccurring background character to a large role in the first two chapters of K-Memory of Red.
Butt Monkey: Gets mistreated frequently by the other HOMRA clansmen in the manga, particularly Misaki.
Talking Is a Free Action: When he falls after blocking an attack meant for Shouhei, he says several lines before he lands.
They Call Me Mr Tibbs: At first he tells Shouhei not to call him "San-chan" anymore but to use the more respectful "Bandou-san". However, he later reveals he likes being called by the nickname more than he lets on since as soon as Shouhei tries to address him differently, Bandou tells him not to.
Tsundere: Clearly cares very much for Shouhei, but he still tries bullying Shouhei into respecting his higher status and refuses to admit that he cares.
Bandou: (after Shouhei tries addressing him differently) Shut up! That's disgusting...! Just call me how you used to call me! *blush*
Wangst: In-universe, the other HOMRA members treat his inferiority complex like this.
Voiced by: Kazuki Shimizu (Japanese)
A member of HOMRA who likes visiting clubs and hitting on women, once which almost cost him his life. He is the main character of Chapter 3 of K - Memory of Red.
One of the main characters of Chapter 4 and 5 of K - Memory of Red. A young man who was taken in by Fujishima one day, into the bar HOMRA. He turned out to have been sent there by an organization who tasked him to kill either Mikoto Suoh or Tatara Totsuka, both of which he failed at doing so. He was later forgiven by Tatara and given a second chance after Mikoto made him a new member of HOMRA.
In the Hood: His design in the anime has him wearing a hoodie most of the time.
I Owe You My Life: To Kousuke for saving him from dying and to Mikoto for freeing him from bondage after singlehandedly wiping out the organization he was forced to serve and then making him a new member of HOMRA.
Jerkass: To most of the other HOMRA clansmen at first, except Kousuke.
Ungrateful Bastard: The first thing he does when he wakes up is insult the people around him. And then he tries to assassinate Mikoto and Tatara.
Volleying Insults: Often with Yata, whom he enjoyed comparing to a chihuahua due to his small size.
One of the main characters of Chapter 4 and 5 of K - Memory of Red. A kind-hearted young man who took Eric in after finding him lying half-dead on the side of a road. He often tries his best to watch out for his new ward.
Good Samaritan: For animals mostly, although he'll help an injured person, too, if he thinks they need it.
Major Injury Underreaction: After getting his hand pierced by a knife, he later has to remind Totsuka he's still in need of medical attention by showing him his bloody hand nonchalantly.
Nice Guy: He often picks up and brings back injured stray cats or dogs that he finds while walking outside and then takes care of them until they recover. He later does this for Eric as well, and even tries to take all the blame for him despite everything Eric did.
Not So Stoic: After interrupting Eric's attempt to attack Totsuka by grabbing the blade of his knife barehanded, he angrily asks Eric what he's trying to do and then says he should've forced him to talk earlier. He also looked quite worried when it seemed like Mikoto was about to kill Eric.
The Blue Clan, led by Reisi Munakata. They are the sworn enemies of HOMRA. On the surface, they are a sector in the government, meant to deal with supernatural activities. Though highly organized and technologically advanced, the members lack the strong sense of kinship that the HOMRA members have.Tropes that apply to SCEPTER4 as a whole:
Flash Step: They all seem to have the ability to do this.
Honor Before Reason: Like HOMRA, who are a reckless mob by default, SCEPTER 4 don't use battlefield tactics even when fighting an armed force (HOMRA) in open ground. This, despite having a trained and disciplined police force who all have consistent ranged weaponry and numbers comparable to the enemy. Instead, they rush in and attack one-on-one.
Brilliant but Lazy: He prefers quietly sipping tea while his clansmen are getting themselves thoroughly thrashed by an enemy, but as soon as he steps out onto the playing field the odds change dramatically in his favor.
Could Have Avoided This Plot: After Mikoto kills the Colorless King and awaits Reisi to kill him before his Sword of Damocles can fall, Reisi bitterly tells him that they could have avoided this outcome if Mikoto had only done something earlier to prevent it from happening.
Custom Uniform: Being the leader of SCEPTER4, he wears a cravat, unlike the rest of the members who have no neckwear.
Foe Romance Subtext: Has tons of it with Mikoto starting with their suggestive, almost flirtatious conversation in prison, which is later followed up by Reisi leaning down so close to Mikoto at one point that their faces are only inches apart.
Their relationship is so much more "romance" than "foe" that Seri seems to be envious of it.
Japanese Pronouns: He uses watashi most of the time, but switches to ore in more personal scenes.
Just Toying with Them: For his entire battle with Kuroh in Episode 7 since he was not only dodging every attack easily, but also had one hand behind his back and didn't even bother to draw his sword.
Kill the Ones You Love: In the final episode, he reveals that personally, as Reisi Munakata, he only wants to help Mikoto. In the end, however, he is still forced to kill him after making a split second, gut-wrenching decision before Mikoto's Sword of Damocles could fall.
Papa Wolf: Not too obvious in the anime itself, but there's a manga side story in which he claims he sees SCEPTRE 4 as his family. Yet another way in which he and Mikoto are Not So Different after all.
Purple Eyes: His eye color seems to indicate both his powerful status and special powers as a king.
Reasonable Authority Figure: Despite being a stickler with rules, he's willing to listen Shiro that Weismann might be the culprit and investigate him. He's also willing to settle things peacefully with Mikoto and Homra rather than use violence at the risk of the civilians.
Sadistic Choice: Either he is forced to kill the only person he ever considered his friend or let his Sword of Damocles drop to the ground and kill everyone around them. He chooses the former.
Tsundere: Towards Mikoto. He complains several times about breathing the same air as Mikoto made him sick, but clearly cared for Mikoto and actually spends a great deal of effort trying to talk to him, such as in Episode 3 where he went to his jail cell just to talk to him, and in Episode 10 when he went to the extent of getting Seri to request Izumo just so that he can spend some time with Mikoto.
Scepter 4's second-in-command, a cold and calculating woman.
Action Girl: She's the only woman who actively fights alongside the men amongst the cast. However...
Faux Action Girl: For being SCEPTER4's second in command she certainly doesn't seem to fight much, and whenever she does she's easily beaten. Special mention to that the only move she uses is the same Stock Footage move that's used in the opening. It's exasperated by the fact that she picks fights or displays some measure of arrogance, but scares easy.
This is averted by the Days of Blue manga, however, where her true Action Girl colors are shown. She spends her day off catching dangerous animals sicked on SCEPTER4 while her clansmen cower in fear- even going so far as to kill a snake with her bare hands.Can't handle spiders, though.
Big Damn Heroes: She stops the fight between Saruhiko and Misaki before it got even worse.
Deer in the Headlights: In Episode 9, she freezes when Mikoto launches a powerful fiery vortex at her and her men, forcing Saruhiko to run in front of her and throw up a barrier to try to block it. Episode 11 has her get surprised enough to nearly get beaten by Misaki if Saruhiko didn't protect her again.
Though it is debatable whether he did it to save her or get Misaki all to himself.
Embarrassing Nickname: Izumo calls her the "Tundra Woman" which somewhat embarrasses her when Misaki uses it as well when he first meets her, and she later tells Izumo not to say strange things to his clansmen.
Male Gaze: Rather narmy, actually. The camera is incredibly blatant about this whenever she's about to swing her sword.
The exact same animation is reused in each fight (a ridiculous pan from her butt around up to her breasts before she finally swings her sword and fails to do anything useful at all). It goes beyond blatant.
The third-in-command of Scepter 4. A lazy, rather bored young man who is younger than both Reisi and Seri. He used to be a member of HOMRA before he switched sides, claiming that he didn't fit in with them and because he is seeking more power.
All Your Powers Combined: Despite having left HOMRA, he can still use their fire-based powers and combine them with the powers he gained from SCEPTER4.
Ambition Is Evil: He left HOMRA for power, according to his words in Episode 5. Turns out he actually did it to make Misaki pay attention to him.
Attention Whore: Towards Yata. Seeing as he'll go to lengths to just get Yata's attention. Especially obvious in episode 12 when Misaki's attention is shortly drawn towards Shiro's Sword of Damocles. He completely freaks out, raging with jealousy, demanding to have Misaki's attention back on him:
Saruhiko: Misaki! Why are you looking away? I am your opponent! I am, remember?!
Because You Were Nice to Me: According to an interview with the voice actor, Mamoru Miyano, Fushimi was originally a rather timid person who clung on to Misaki because he's the only one who was nice and actively tried to reach out to him. It's rather tragic.
Berserk Button: Do not try to interfere with a fight between him and Misaki. Rikio tried, and was immediately attacked by flame-covered daggers, and Saruhiko's maniacal shrieking. Subverted with Seri, possibly because she is his boss and he won't dare to go against her for such a petty reason. It would just backfire on him.
Saruhiko: I am not interested in this country. I am only interested in blood and flesh.
Brilliant but Lazy: He has been mentioned to be extremely talented, except that he slacks off more often than not, much to Seri's chagrin. There's a reason he's the third-in-command in SCEPTER4, behind only Seri and Reisi despite his tender age of 19.
Broken Bird: The Drama CDs seem to imply that he's this.
Saruhiko: Heroes sure are convenient to have around, but no matter how long you wait for them, they'll never appear in real life.
Combat Sadomasochist: He certainly enjoys hurting Misaki as much as hurting himself as seen in the flashback. He was even willing to be pushed around by Misaki because of this.
Crazy Jealous Guy: Enough to switch to SCEPTER4 not because of power like he claims, but due to his envy of HOMRA's importance in Misaki's life that ended up pushing himself further and further away from him.
Curb-Stomp Battle: He easily knocks out four HOMRA clansmen simultaneously in mere seconds.
Does Not Like Spam: Does not eat raisins, bamboo shoots and green peppers, and every other type of vegetable. Misaki always helped him eat them back in school.
From Nobody to Nightmare: HOMRA apparently picked him up off the streets, and after defecting to Scepter 4 he climbed the ranks to third in command by the time he was 19. For reference, he appears to be the youngest member of Scepter 4 seen yet.
Giggling Villain: Not really the "villain" part... yet. But he indulges in evil giggling a lot whenever Misaki is concerned.
The Glasses Come Off: Accidentally happens when he fights Misaki, indicating that he's not Blind Without 'Em, although he still needs them to see well since he picks them up again shortly afterwards.
In-Series Nickname: "Saru" (monkey) by Misaki and HOMRA's men in general. Also "mean glasses" by Neko.
Knife Nut: When he was in HOMRA. He still uses them, in addition to his sword.
Leitmotif: "Knife", which also doubles as a theme for Saruhiko's broken relationship with Misaki.
Le Parkour: The opening implys that he is able to do this. It shows him jumping from street light to street light, with his sword between his teeth no less, and he is very quick and agile in the anime proper.
Loners Are Freaks: In flashbacks, he is never shown interacting with any of the HOMRA members except Misaki and when Misaki ignored him, he became more bitter toward HOMRA as a whole.
Mark of Shame: The burnt HOMRA tattoo on his chest, which is later revealed to have been self-inflicted when he left the clan. It still seems to bother him though, since he scratches it whenever he's around other HOMRA members.
Nonchalant Dodge: Happened a few times during his battle with Misaki in Episode 5.
Non-Uniform Uniform: He is the only member of SCEPTER4 to leave his uniform coat unbuttoned and his shirt collar turned up.
The Only One Allowed to Defeat You: Towards Misaki. As soon as Rikio tries to get involved in their battle, Saruhiko cuts him off with an attack and then yells at him to stay out of it. Subverted as Saruhiko does not actually want to defeat him as much as he just wants to fight.
Parental Favoritism: A non-biological version. He is Munakata's favorite, knows this and is not above using it to get something he wants. Like his single room, for example.
Pet the Dog: Despite leaving HOMRA he still obviously cares for Anna to the point in the radio drama where he's willing to help her get unstuck. Granted, he can't help her because he's not physically strong enough to move the vending machines, but it's the thought that counts. Alas, Seri does not believe him one bit when he tells her he's helping a child out.
Sanity Slippage: In flashbacks, he was very mellow but the more Misaki ignored him, the more jealous he became. Eventually, in the flashback of episode 10, he just snapped. It's to note that after this incident, whenever he speaks with Misaki, he sounds more insane.
Stalker with a Crush: Toward Misaki especially in the Drama CD. It's very suspicious that he knows almost everything about Misaki from his height to his blood type and birthday etc. Even in earlier episodes, he showed his stalker tendencies particularly going to all the places Misaki was at and getting disappointed when he missed him.
Troll: He loves to press Misaki Berserk Button's just to piss him off. He deliberately provokes him cruelly for no particular reason other than amusement at his pained, angered reactions. Turns out he does it to get Misaki to finally pay him some attention.
Tsundere: A rather strange example, but an example nonetheless - he hides the fact that he really cares about Misaki and what he feels and thinks towards him through either a sadistic, cruel exterior (e.g. Episode 5) or a bored, easily irritated one (Drama CD, where he grumbles about Misaki being annoying several times). It is played straight for laughs in a radio drama towards Anna, in a non-romantic way.
The 1st King, the Silver King. Unchanging and immortal, it was he who designed the King system long ago. A vaguely sinister and very eccentric figure, he soon proves to not be quite who he seems.
Acting for Two: Lucien Dodge, the voice actor for Adolf K. Weismann, will also be voicing Tatara Totsuka and Masaomi Dewa.
Ambiguously Evil: He is often seen acting creepily and downright psychotic at some points behind the scenes, but his identity and motivations remain mysterious. Turns out he is not evil at all, but the Colorless King possessing him indeed is.
Body Surf: He has moved from his body into that of a 17 year old boy, lost his memories, and constructed a persona as Shiro. He still seems to be himself, even without memories. It's unknown who, if anyone, Shiro was before he became Adolf.
Cynicism Catalyst: He did not take his older sister's death well at all, and isolated himself for over sixty years as a result of his bereavement.
Immortality: The Silver King's power is 'unchanging', and he's known as the 'Immortal King' who hasn't aged for decades. He also survived a bombing in WWII during which he lost his older sister.
Leitmotif: Adolf K. Weismann, a rather dramatically sinister song. This song is more often used as a Leitmotif for the evil Colorless King, though, than the innocent Silver King Adolf.
Mysterious Watcher: In the third episode, he appears to be observing Shiro from his airship. While dancing around inside his room, images of Shiro appear on the floor with each new step he takes until he finishes the dance.
Not Himself: The unhinged behavior he shows in early episodes doesn't mesh with his behavior in the past as shown in Episode 9. Episode 11 finally reveals it was because he was possessed by Tatara's murderer at the time, explaining why he was acting so differently.
Rapunzel Hair: He has knee-length silvery hair, although in the past it was much shorter.
Sharp-Dressed Man: Wears a classy ensemble consisting of a long dark jacket and pants paired with a ruffled white shirt.
Soulless Shell: The Silver King's body survived the airship explosion without a scratch but it appears to be soulless, since his mind is in another body and the Colorless King has already abandoned it.
Wicked Cultured: Wears fancy-looking clothes and frequently dances around his room with an inanimate woman wearing a fox mask. This is later revealed to have been the Colorless King controlling him at the time, and not his own actions.
"Thanks to the President's interference, everything was kept under control. If she hadn't come in the nick of time, who knows what would've happened?"
Voiced by: Nozomi Yamamoto (Japanese)
The vice-president of the student council.
Absurdly Powerful Student Council: She is the vice-president, and apparently has enough authorization to have free access to the entire student database and confidential records. This makes is easy later on for Saruhiko to just break in, knock her out, and gain that access for himself to search for Yashiro.
Instant Sedation: She was knocked out by Saruhiko Fushimi in Episode 5 with a chloroform-soaked rag in the latter's attempt to gain access to confidential school records.
Absurdly Powerful Student Council: She could easily authorize the usage of a hedge trimmer to break down the school clock tower door just to apprehend Mishina and prevent him from using all of the festival fireworks.
I Am a Monster: How she feels about her powers, especially since it was the reason why her boyfriend left her.
Mind over Matter: Her powers as a Strain is highly implied to be something akin to telekinesis.
Never Got to Say Goodbye: Her boyfriend dumped her and then ran off without even saying anything to her after finding out about her ability. To get over it, she asked Chitose to substitute for him by saying "Goodbye" to her the morning after spending the night.
One-Shot Character: Only appears in the third chapter of K - Memory of Red as a character of the day.
A horse Strain that appears in the prequel manga, K - Memory of Red. Anna befriended it after it ran away from SCEPTER 4's custody out of a desire to see its former owner get married at her wedding. It is capable of changing its form into a pegasus, but can't actually fly.
Unfortunate Name: Twice! Mikoto literally names it "horse meat sashimi" when he was feeling hungry from looking at it. Later on, Seri later renames it into something far worse: White Bean Paste Stewed Tofu.
The sister of Adolf K. Weismann, who died in the WWII bombing of Dresden.
Spoiler Characters: Spoilers are unmarked, you're advised to have finished the series
"I am the seventh king, the Colorless King! I'm waiting for someone here. A nice night, you say? Indeed it is."
The current self-proclaimed Colorless King. A mysterious man who was caught killing Tatara Totsuka in cold blood in a video clip where he looks exactly like Shiro. He remains a mystery through the series.
The Assimilator: He has absorbed the identities of many people in the past whose bodies he took over. In the process, however, he lost his own sense of self.
Ax-Crazy: He guns down Tatara for no apparent reason after meeting him on the rooftop of a building one night, and later stabs people with shards of glass while grinning madly.
Battle in the Center of the Mind: As soon as Mikoto opens his eyes in his presence, he manages to slip into the Red King's mind and tries to take over from there by consuming the fire that Mikoto's mindscape is filled up with. However, the moment he sees a lion emerging from the flames, he screams and promptly flees. He also tries to do this to Shiro in Episode 11 but loses the battle of wills and is forced to leave.
Big Bad: Responsible for escalating the conflict between the clans into a war and Shiro's involvement.
Body Snatcher: His powers let him do this with anyone who meets his eyes and has an emotional weakness he can exploit, starting with Shiro's original body when he was just a normal student at high school. His end goal was to possess the bodies of all of the Kings, starting with the Silver King but moving on to the others when he failed to take over Adolf's mind or soul.
Body Surf: In Episode 9 he is shown possessing the body of a male student at the school when he phones Mikoto in prison, and even tries to do it to Mikoto as well but fails miserably. Episode 11 reveals he's possessed the bodies of quite a few people so far including Shiro, Adolf K. Weismann, Kukuri and other passersby from both HOMRA and SCEPTER 4.
Card-Carrying Villain: When he smugly calls Mikoto to tell him he was the one who killed Tatara, and then provokes him further by claiming he'll hurt his other clansmen next.
Cannibalism Superpower: He can consume the powers of another King if he can successfully take over their body.
Establishing Character Moment: The video clip where he hums Ode to Joy while jerking his body from side to side, starts laughing and then turns around to shoot Tatara without warning.
Evil Sounds Deep: Anyone he possesses speaks with a deeper tone than usual, including Shiro and Kukuri.
Fighting from the Inside: While he was in possession of Kukuri's body, she sometimes managed to regain control and weakly cry out for help, though not for long. The Colorless King later does this himself in the final episode after Shiro traps him inside his soul before going to meet Mikoto.
Fights Like a Normal: Unlike the Red and Blue Kings, the Colorless King's powers are limited to taking over other people's bodies so he has to rely on using guns, bombs, and other weapons for offensive purposes.
"Freaky Friday" Flip: His possession of the Silver King's body caused him to switch bodies with the other King the first time he did it instead of merely taking it over due to the way their powers clashed, after which he kicked Shiro (who is now possessed by Adolf K. Weismann) off the airship in an attempt to kill him.
Generic Doomsday Villain: He receives next to no character development or explanation for his evil and insane nature. Furthermore, he simply seems to be seeking power and spreading chaos for the sake of it rather than due to any complex motivations. He doesn't even get a name!
Grand Theft Me: Was gunning for the Silver King's body to obtain the First King's powers. For that reason he tried to possess the Silver King on the night when he shot Tatara but due to the Silver King taking over Shiro's body in the process when their powers clashed, the Colorless King makes another attempt in Episode 11 when they meet again.
The Heavy: He's the only clear-cut and unsympathetic villain in the show, and his actions have definitely been driving the plot from killing Tatara, to trying to take over Adolf Weismann only to end up exchanging bodies in the process, then creating further conflict between the Red and Blue clans in the final arc of the anime by drawing the Red King to the school.
Hidden Villain: Since the first arc of the anime made it unclear as to whether or not Shiro was the one who actually committed the crime since he was suffering from amnesia, while Episode 7 and 8 later seem to suggest Adolf Weismann might be the true villain all along. However, Episode 9 finally makes it clear that neither of them were responsible (and they are, in fact, the same person); there was another party involved who was using his body-snatching powers to control them at different times.
Hijacking Cthulhu: The Colorless King tries to hijack the Silver King, who is effectively immortal. It backfires.
Hoist by His Own Petard: His third attempt to take over Shiro's body in the last episode is what leads to his downfall after he ends up getting trapped inside the Silver King's soul and then gets taken to meet Mikoto, who greets him by ramming a hand right through his chest and killing him.
Japanese Pronouns: He uses ore in the video clip, but uses oira while talking to Mikoto in prison. In the final episode, his multiple identities cause him to use boku and ore-sama as well, showing how dissociated he has become by that point.
Kitsune: In Episode 9, he's shown wearing a fox mask while possessing the body of a student. The white spirit that talks to Mikoto from the magical red phone also takes on the face of a fox as it later does in Episode 11 as well.
Leitmotif: Adolf K. Weismann, a rather dramatically sinister song. This song was played for all the scenes when he is in Adolf's body.
Loss of Identity: Shiro regards that he has switched bodies so many times he cannot even tell which is his original personality.
Mad Bomber: Is quite fond of using explosives, which he uses to blow up Adolf K. Weismann's Zeppelin while possessing the King's body. He also uses timed bombs, which he plants all over the place in Ashinaka High School in Episode 11.
Malevolent Masked Man: In Episode 9, he wears a fox mask while gleefully telling Mikoto he killed Tatara and is willing to kill more of his clansmen.
Mind Hive: He's definitely more than one person in a single body, with the implication being that all the other voices are his previous victims.
Nice Job Fixing It, Villain: In Episode 11, his attempts to break Shiro's mind and make him run away into nothingness end up making his memories resurface.
No Eye in Magic: Eye contact is his modus operandi for body takeover. He even has to provoke Mikoto into opening his eyes before he can steal inside his mind in Episode 9.
No Name Given: He is only identified as "The Colorless King". Given the number of bodies and personalities he has consumed, it is dubious whether he even remembers his own name.
Obviously Evil: Gloating, Evil Laugh while he shoots a random unarmed person in cold blood? No, he couldn't possible be evil.
Power Parasite: His goal was to possess the other six Kings' powers and become the single, most powerful King left standing. Interestingly, he has never once shown to have been successful in gaining any powers with this method. Given how powerful the other Kings' mental defenses are by default, it's unclear whether or not his plan is even feasible. Given his state at the end of the anime, it's possible that he's just completely delusional.
Slasher Smile: Whenever he possesses someone, their smiles turn downright twisted.
Smug Snake: He attempts to piss off Mikoto enough to open his eyes in order to possess him, but he bites off more than he can chew when he realizes Mikoto won't give up easily without a fight and ends up hightailing it out of there.
Talking to Themself: When he possesses Kukuri, the personalities of his previous victims manifest and begin talking to one another.
Villainous Breakdown: He sure seems to be suffering from this in Episode 12 after Shiro/Weismann gets the students out of the school and there are no ignorant innocents for him to possess.
Walking Spoiler: A major one. Just knowing that he's a separate character from Shiro or that he has body-snatching abilities would instantly spoil the entire murder mystery plot, as well as kill any suspense in the first eight episodes.
Would Hurt a Child: He threatens to rape Anna in order to get a reaction out of Mikoto at one point during their conversation in Episode 9, and in Episode 11 he snipes at her from afar while possessing a SCEPTER 4 member.