Characters from the Castle of Shikigami (Shikigami no Shiro) trilogy.
- Voiced by: Daisuke Kishio (Japanese), Michell Roche (English)
- Alliterative Name: His first and last name both begin with "K".
- Bittersweet Ending: His ending in the third game. He destroys the castle, but is left heartbroken over seeing an illusion of Tsukiko and is consoled by Sayo.
- Cain and Abel: His brother is the Big Bad of Shikigami II.
- Catchphrase: Has some kind of iteration of asking if a boss wants to be arrested and beaten up, or beaten up and then arrested, in all three games.
- Expy: His appearance in the third game is reminiscent of Kyo Kusanagi, and to an extent, Kazuki Muto.
- Hell-Bent for Leather: His primary outfit in the third game.
- The Hero: In all three games.
- Heroic BSoD / Manly Tears: In his ending in Castle of Shikigami III, he breaks down in tears and is consoled by Sayo after defeating Tsukiko.
SazaeKohtaro's Shikigami during the first two games. A spiritual familiar who accompanies him everywhere, whether he likes it or not.
- Demoted to Extra: From a playable character in the first two games, to The Dividual with Koh in the third.
- Miko: She's a shrine maiden at Yonchounyotai shrine.
A carefree psychic detective who works in the same agency as Kohtaro, and transforms into a werewolf when enraged. Playable in all three games.
Fumiko Odette van Stein
A half-German, half-Japanese witch who appears in all three games. She's madly in love with Koh.
- Murder the Hypotenuse: She murdered Freedom Wind, Fumiko's own stepmother, in a conflict over a man.
- Really 700 Years Old: She was born in the year 1605.
- Super-Deformed: An alternate form, "Chibi Fumiko", is playable in the second game. It's stated in her regular version's paired ending with Sayo that she made the form after hearing that Koh isn't attracted to "older" women.
- The Vamp
- Villain Protagonist: Her hobbies are stealing the men from other women, and trampling upon people. Shikigami III reveals she also murdered her own stepmother.
- Yandere: Definitely this for Kohtaro.
A Taoist and taekwondo teacher from Korea. After one of his students was murdered, he closed his dojo and went in search of the killer.
- Put on a Bus: He turned himself into the police and got imprisoned at the end of Shikigami II to atone for his sins. His cousin Mihee is assigned to kill him, but they are never shown together in any scenes.
A secret character in the first Castle of Shikigami game, originally appearing in Elemental Gearbolt.
Niigi Gorgeous Blue
- Canon Foreigner: Her true identity is Yumi Araigi from Alfa System's other game Gunparade March ("Niigi" is an alternative reading of Araigi).
A Japanese ninja with American origins. When he was younger, he arrived to Japan and lived with Kohtaro, his brother Shintaro, and Tsukiko as a homestay resident. His real name is Roy Bauman. He returns in Shikigami III.
- Creepy Crossdresser: In his paired route with Munchausen in Shikigami III, dismayed that they're not as popular as the game's female cast, they both decide to wear bows and makeup while pretending to be ladies.
- Expy: He is probably one to Galford.
- Highly Visible Ninja
- OOC Is Serious Business: In the third game, if he's paired with either Batu or Gennojo, he will be given a more serious personality as opposed to his usual playful self in other scenarios.
- Patriotic Fervor
MoonsongRoger's Shikigami. Her main skill is to produce small liquid bombs that have a large amount of power.
At the age of 10, Emilio is a member of one of the noblest families in Alcaland. He detests involvement in foreign matters. Emilio has the means to call demons to his side, a gift that runs in his family. Though he has a good personality at heart, he tends to look down on commoners.
DevourerEmilio's demonic Shikigami, taking the form of an eye with bat wings.
A brooding exorcist hired by Emilio Stanburke. Batu simply wants to get in, get the job done, and go, and tires of Emilio's nationalism. He enjoys hard liquor.
- Downer Ending: He dies in his ending.
- Eyepatch of Power
- Knight of Cerebus: Despite being a protagonist, most of his scenarios are Played for Drama. If he's paired with Kohtaro, Kohtaro is missing in action in the ending, and Roger acts serious with Batu instead of comedic. At least Reika has a little bit of humor when paired with him.
- Spotlight-Stealing Squad: Batu is considered the mascot of the PC version of Shikigami no Shiro III due to being excessively featured on the front box. However, unlike the Nintendo Wii version, the order the characters appear on the character selection screen is not altered in any fashion to put Batu in the first slot.
A traveling doctor from Korea, equally skilled in both the healing and assassination arts. She is also Kim Dae-Jong's cousin, but even though she's searching for him, they do not meet during Shikigami III.
- Berserk Button: She hates what she considers lovey-dovey couples.
- Deadly Doctor: As gifted with ending lives as she is with saving them, Mihee takes sadistic pleasure in killing.
- Laughing Mad: In her ending, she laughs insanely then breaks down in tears.
- Red Right Hand: Her left hand has a sickly purple glow that is capable of killing her targets with a simple touch. In-game, this is her special/bomb attack. It deals heavy damage to a section of a boss, but it has very short range.
- Suspiciously Similar Substitute: In terms of gameplay, her attacks are the same as those of Kim's from the previous two games, though the front blades she fires as her normal shot are larger, and the large spheres shot out the sides no longer home-in on enemies.
- Tears of Blood: Played for Laughs.
A time-traveling police officer. She has traveled to the past at the request of her boss (none other than Fumiko Odette Van Stein) to help solve the mysteries of Alcaland, the location of the current Castle.
- Adaptational Modesty: Her redesign downplays a lot of the fanservice from her home game, giving her a coat and a skirt.
- Badass Normal: She reveals to Munchausen that, in her time, she's one of the last humans born through natural childbirth rather than genetic engineering.
- Bare Your Midriff: She wears a short shirt and keeps all but the top button of her jacket unfastened, exposing her stomach.
- Beware the Silly Ones: She tends to forget her mission but can easily kick as much ass as anyone else in the game.
- Breaking the Fourth Wall: Does this more than the other characters in the game, for example, she talks to the player.
- Canon Foreigner: She's originally from the Laserdisc game Time Gal.
- Cloud Cuckoolander: How she appears to others in several scenarios.
- Genki Girl
- Hidden Depths: Clearly illustrated when she teams up with Batu or Emilio and helps them overcome their emotional baggage.
- Nice Girl: Not only is she one of the comedic characters, but she's also really kind, and given her Hidden Depths, that's saying a lot.
- Nice Hat: It's very puffy.
- Spotlight-Stealing Squad: She's the main mascot of the Wii version of Shikigami III. On the cover, she's the most prominent character, standing in front of Koh and Sayo. The character select screen has also been altered to place her in the first slot.
- Time Stands Still: Her Bomb attack freezes all enemies on the screen for a few seconds.
Nagino IseA seemingly carefree elementary school student investigating Alcaland for fun. However, her happy-go-lucky mood is merely a facade; her true name is Mirai Shibamura (possibly related to Mai Shibamura from Gunparade March), and she is actually the human incarnation of a powerful deity, inheriting the ability to time travel.
StriderA rabbit that accompanies Nagino Ise into battle in Shikigami no Shiro III, and serves as her Shikigami.
- Battle Butler: In III, he's capable of as much destruction as Fumiko.
- Creepy Crossdresser: In his paired route with Roger, dismayed that they're not as popular as the game's female cast, they both decide to wear bows and makeup while pretending to be ladies.
- Promoted to Playable: He appeared in earlier games to support Fumiko as an NPC.
Bosses from Castle of Shikigami I
Takayuki FujishimaThe Stage 2 boss. Fujishima was once a leader of the Japan Self-Defense Force(also known as the SDF), though he eventually went AWOL, taking an entire regiment with him. He wants to summon a God to Tokyo.
- Playing with Fire: His main attacks are fire-based.
Hiroshi HasegawaThe Stage 3 boss. A man whose wife's murderer got away with a seven-year sentence. This drove Hiroshi into a blind rage, and he killed the criminal upon his release. Soon after, he became an ogre unsatisfied with merely the blood of his wife's killer.
Lynn BaumanThe Stage 4 boss. In life, he was a famous Japanese theater performer, known as the 'Blue-Eyed Samurai'. However, he is now a ghastly samurai that kills without remorse.
- Big Bad
- Demonic Possession: She's being controlled by a being known as Zanryuu Shinen.
- Final Boss: Of the first game.
- Hold the Line: Zanryuu Shinen is unhittable, but depletes its own energy over time.
- One-Winged Angel: She has three forms: ghostly woman, giant spider, and Zanryuu Shinen's true form of skull-shaped mist.
- Spider People: Her first form has a large spider tattoo, and her second is a giant spider.
SeptentrionA mysterious organization that acts behind the scenes in the events of the first game, whose members are implied to be inhuman. This organization is mostly mentioned when playing with Tagami, who is an immortal being who betrayed the organization in search of her husband, who was also a member of Septentrion.
- The Man Behind the Man: They're the ones responsible for the game's events, up to and including summoning Zanryuu Shinen and providing him with Shoujo's body.
- Nebulous Evil Organisation
- Puppeteer Parasite: All of the game's bosses were being controlled by demonic mind parasites created by this group. The parasites use their host's memories to pretend they're the real person, with the exception of Bauman, who still retains some level of consciousness.
Bosses from Castle of Shikigami II
Arala CranThe Stage 1-2 boss, and a member of Shintaro's New World Order.
- The Rival: Her dialogue with Fumiko implies that they're each other's.
Anolegos DundeonThe Stage 2-2 boss, and another member of Shintaro's New World Order.
- Dark-Skinned Blonde: He has dark skin and pure white hair.
- Dual Boss: Regardless of whether you play in single or multiplayer mode, you always fight them both.
- Spell My Name with an "S": They are known as the 'Aja Brothers' in the NAOMI version.
- Suicide Attack: Their final attack is to impale each other and release a storm of bullets.
- You Don't Look Like You: She has a completely different appearance and attack pattern between the second and third games.
- A God Am I: His primary motivation.
- Big Bad
- Final Boss: Of the second game.
- Load-Bearing Boss: After his "World Order" form is defeated, he completely disintegrates, taking the Castle with him.
- One-Winged Angel: After being defeated in 5-1, he transforms into "World Order", a sphere of purple energy surrounded by rings, for 5-2.
Bosses from Castle of Shikigami III
Shikou MibuyaThe Stage 2 boss. He is Sayo Yuuki 's uncle, aged 40, and a crow tengu. His Shikigami, Yata, grants him the ability to fire crow-shaped energy at his opponent.
- Affably Evil
- Playing with Fire: His main attacks are firing flaming crows or fire spears.
- Power Nullifier: In his second phase, he starts off by launching an unblockable arrow that prevents you from using your normal weapon.
Freedom WindThe Stage 3 boss. She was Fumiko's stepmother, and killed by her in a conflict over a man.
- Affably Evil
- The Power of the Sun: She launches gigantic fireballs during one of her later phases.
- Wave-Motion Gun: And the following phase ups the ante with gigantic energy beams.
KagachiThe Stage 4 boss. He is Tsukiko Johjima's guardian, and a werewolf, like Gennojo Hyuga.
- Creepy Crossdresser: In the Roger/Munchausen paired route, he's crossdressing just like them.
- The Dragon: To Tsukiko.