The series began with the 4-part Original video animation Armitage III and spawned two movies. The first film is a shortened version of the OVA entitled Armitage III: Poly-Matrix (アミテージ・ザ・サード POLY-MATRIX?), redubbed in English. The second movie, Armitage: Dual-Matrix (アミテージ・ザ・サード DUAL-MATRIX?) is a sequel set some years after the original story.
The year is 2046. The overpopulation of Earth has led to the colonization of Mars—with the aid of the "first type" androids, men were able to begin terraforming the unfriendly environment of Mars and build the city of Saint Lowell. Seventy years after the start of colonization, the city is completed and inhabited by great numbers of people and "Second type" robots, much improved versions of the "First types".
The story begins with a space shuttle nearing the destination of Saint Lowell's space port. On board is Ross Syllibus, a middle-aged cop from Chicago. Syllibus asked to be transferred to the Martian Police Department to escape from his past and haunting memories of his beloved one being murdered by a robot. At the Saint Lowell's space port he is to meet his new partner—a young girl named Naomi Armitage.
On the same shuttle as Syllibus travels Kelly McCannon—"the last country singer in the Universe". As the shuttle nears the terminal, a mysterious man is seen entering the cargo section; soon after this, the intruder is noticed and the alarms go off.
Later, as Ross finally gets off the shuttle, he witnesses a disturbing scene at the airport. First he gets bumped into by the mysterious man with a big suitcase and two guards. Soon after that, a young woman with a gun orders the men to stop and get their hands up. Puzzled, Ross notices a few drops of blood spilling from the mysterious man's suitcase. A shootout between the young woman (who turns out to be Ross's new partner, Armitage) begins. The two robot guards are killed by Armitage and the mysterious man is wounded, but manages to escape. However, he leaves his suitcase behind—inside of which is the dead body of Kelly McCannon. To everybody's surprise and horror, McCannon turns out to be a robot: a new, never-seen-before "Third type" android that's superficially identical to humans.
Later, the mysterious man hacks into the public TV system and broadcasts the material taped by shuttle's security cameras. The tape shows the man murdering Kelly McCannon and reveals the fact of her being a robot to the entire city. The mysterious man, who introduces himself as Rene D'anclaude, reveals unbelivable news—the Third types have been among the regular people for a long time and nobody can tell them apart from humans. He also reveals a list of Thirds—and it turns out that a lot of well-known people are actually robots. Riots begin in the city as people start to capture and burn all the Thirds they can find. Meanwhile, Rene D'anclaude proceeds with his extermination of the Thirds. The two main characters start their investigation and eventually find out, that the victims are women...and some of those women were pregnant.
In a brief moment just before dying, one of the victims sends out a message with the list of Thirds to save them from being slaughtered. Armitage receives it and goes her way to stop D'anclaude. It is then revealed that Armitage is in fact a third herself and goes into hiding as the police hunt for her. Ross seeks her out as she enlists the help of a male third named Julian Moore. D'anclaude then attacks them and is revealed to be a second.
While the police drop the case with D'anclaude supposed capture, Armitage and Julian search a databank for information on her origins. Suddenly, the latter is taken over by the real D'anclaude. Though Armitage is able to win, Julian dies. She teams up with Ross to break into the hospital D'anclaude was recovering in, branding them as criminals after the rescue.
Armitage and Ross later go off in search of her "father", Dr. Asakura, only to learn he had lost his mind, as explained by a gentler, reprogrammed version of D'anclaude, living with delusions of creating "Fourths". His line of assassinroids were used by the government to kill Thirds so that there will be fewer birth rates on Mars, meaning the planet will have to ally with Earth, which they just did, to receive immigrants. During their time at Asakura's facility, Ross and Armitage fall in love. The next day, after Asakura deactivates Armitage so he can install angelical wings and particle cannons on her chassis, the military attack the facility, killing the former, while the latter and Ross fight them to the finish. Months later, Ross returns to Mars, using false IDs, however Armitage loses hers after arrival. Ross then learns that he's going to be a father.
Set some years after the original plot, this film follows Naomi Armitage as she investigates a military attack on robotics plant on Earth.
It had been several years since the events of the previous OVA. Naomi Armitage and Ross Sylibus, now living under assumed identities, are living in St. Lowell on Mars, along with their daughter Yoko (which Naomi had given birth to), as husband and wife. Ross now works for a company seeking to restore oceans to Mars by using ice asteroids. However, a new effort to restore the Third project prompts Naomi to travel to Earth to figure out what is happening. Meanwhile, Ross saves a facility from a group of terrorists and is declared a Martian hero.
When Armitage arrives on Earth, she confronts Colonel Strings, hero of the First Error, which was a suppression of a robot uprising, which in reality, was to cover up the existence of the Thirds. But then he is shot by agents of a Earth Robotronics Corporation. Its vice president, Demetrio Mardini, asks Armitage to give the data on how Thirds can conceive so humanity can create a race of beings who exist to serve. She refuses so he resorts to force and unleashes a robot that scrambles her eyes. She manages to use her telepresence abilities to hack into its system and overload it. She then escapes but is damaged and is found by a repairer third named Mouse, who prides himself on his skill and frequently brags that he's a "genius". However, Mouse is also an informant to Demetrio and presents the data he found on Armitage; but he only got the recent data and Demetrio wants the conception data. Mouse claims that he didn't know about the conception data, and also that if it existed it would be with what he gave him; but Demetrio refuses to believe either of these and tries to brutally force it with two clones of Armitage, who severely injure Mouse. He does not get anything and throws Mouse in the trash, Mouse swearing revenge.
Back on Mars, prime minister Fredrick O'Hara sends Ross to Earth to represent the planet in the support of robot rights, promising amnesty from the charges against them. However, Demetrio's agents captured Yoko while Ross was away from the hotel, and is threatened that he will not see Yoko again if he votes for the Rights Bill,. With a little reluctance, Ross remains neutral on the bill. Demetrio's agents, however, reveal that they were planning on killing Ross from the start, contrary to their deal. Armitage is able to save him at the very last moment. Together, they vow to rescue their daughter.
They storm Demetrio's compound; Armitage deals with Demetrio while Ross saves Yoko. The same robot Armitage encountered earlier had been upgraded to withstand her telepresence attack. Meanwhile, Ross manages to locate Yoko in a freezer. Elsewhere, Demetrio demands the secret in exchange for forgetting the damages they committed against him and his company. Armitage lures him closer, presumably to tell him what he wants to know; but she ends up kicking him in the crotch and telling him that Third conception isn't simply data, it is about true love. With that she escapes again, forcing Demetrio to unleash the clones on her. She manages to evade the two and meets up with Ross and Yoko. Yoko is overjoyed to see her mother but recoils when she sees Armitage's metal shoulder that was scraped off by the clones. Just then, they attack. While Armitage holds them off, Ross and Yoko make their way to an unused space elevator. It is here that Yoko shows that she has a photographic memory, leading them to the space elevator whose location she determined from a map she saw minutes beforehand (Ross comments that she is "quite the little genius"). Soon, Armitage flees to Mouse, who repairs the damage and gives her a program that will allow her to go beyond her limited fighting abilities. He tells her that the password is "Heaven's Door"; but that if she exceeds more than her internal battery can handle, she'll "be knocking at the Pearly Gates for real". She also has him do her one more favour: broadcast the footage of the Third massacre attempts all over Earth and Mars (upon seeing it himself, Mouse comments, "I think it's inhuman, and I'm a robot!"). This compels Demetrio to command the clones to prevent the family from leaving. After both clones are beaten, Demetrio tries having the elevator's defenses fired on their shuttle only to be killed by the last remaining clone, who is at the time controlled by what was left of Julian Moore in Poly-Matrix. Without Demetrio's authorization, the turrets do nothing. A hologram of Julian Moore then appears, wishing the family goodbye. The movie ends with the family enjoying a day at the beach on Mars, on Naomi's birthday.
At the post-end credits, it is revealed that Mouse had salvaged one of the Armitage clones for himself.
- Naomi Armitage (ナオミ・アミテージ Naome Amitēji?)
- Voiced by: Hiroko Kasahara (OVA), Ryoka Yuzuki (Dual-Matrix) (Japanese), B.G. Mills (OVA), Elizabeth Berkley (Poly-Matrix), Juliette Lewis (Dual-Matrix) (English)
- Naomi Armitage is an illegal "Third type" android—the most human-like robot ever. Armitage's creator is Dr. Asakura, whom she refers to as "papa". Armitage becomes Ross Syllabus' partner when he joins the Mars Police Department. She and Ross ultimately fall in love. Although she is simply called Armitage by most of the other characters, including Ross in Poly-Matrix, Ross mostly calls her Naomi in Dual-Matrix.
- In the text notes on the English DVD edition of Poly-Matrix, Chiaki Konaka, the script writer, says that Armitage III was influenced from H.P. Lovecraft's story The Dunwich Horror, one of Lovecraft's best known works and a key text in the Cthulhu Mythos; one of the main characters in the tale is a Dr. Armitage.
- Ross Sylibus (ロス・シリバス Rosu Shiribasu?)
- Voiced by: Yasunori Masutani (OVA), Hikaru Hanada (Dual-Matrix) (Japanese), Skip Stellrecht (OVA (as Hank Wilspank), Dual-Matrix), Kiefer Sutherland (Poly-Matrix) (English)
- A police officer who transferred to the Mars Police Department from Earth's Chicago Police Department after an incident with a robot that left him crippled and his partner dead. He is only able to walk using a cybernetic leg. This incident is the cause for his disdain of robots. During his assignments with Armitage, he loses his arm as well, requiring another replacement cybernetic limb to be put in place. This causes him some grief, as he is slowly becoming what he hates the most. He soon falls in love with his new partner Naomi, enough so, he becomes a renegade cop in order to help her.
- Dr. Asakura (アサクラ?)
- Voiced by: Shunsuke Shima (OVA) (Japanese), Gil Starberry (OVA), Barry Stigler (Poly-Matrix) (English)
- Dr. Asakura is an artificial intelligence researcher and, along with René D'anclaude, the creator of the thirds. Naomi considers him her father. At some point in the past, Asakura's mind was altered–this causes him to appear really crazy at times and prone to violent outbursts, when at other times, he is completely sane and rational.
- Realizing that the government has tracked Armitage and Ross to his laboratory, he completes an upgrade upon Armitage's chassis, one which gives her the power of flight and two particle cannons (Naomi comments that the wings are "too angelic for my taste", but does not deny that they are useful).
- Consequently, he stays in the lab and dies among his projects after the government destroys the entire complex with a tracking missile in an effort to destroy both Armitage and Ross.
- René D'anclaude (ルネ・ダンクロード Rune Dankurōdo?)
- Voiced by: Ryusei Nakao (Japanese), Dan Woren (English)
- René D'anclaude is a doctor that worked with Dr. Asakura to create the Third types. His appearance is used for the line of "assassinroids" that were later used to destroy all the Third types, as well as a base template for their creation. After Armitage and Ross go rogue, D'anclaude is moved to a secretive section of a Mars hospital and the surrounding area is barricaded by official government tanks and droid troops. Armitage and Ross easily face this challenge and smuggle him out, having to avoid the assassinroid D'anclaude in the process.
- Julian Moore (ジュリアン・ムーア Jurian Mūa?)
- Voiced by: Megumi Ogata (OVA), Mitsuki Saiga (Dual-Matrix) (Japanese), Wanda Nowicki (OVA, Poly-Matrix), Mona Marshall (Dual-Matrix) (English)
- Julian, whose alias is "Pluto", is the last model of the Third series, and the only male. He helps Naomi discover her true identity and her origin. An adept hacker, Julian attempts to help Armitage by delving into the files surrounding the creation of the Thirds. His attempt however, is hijacked by the D'anclaude assassinroid who controlled him via a planted computer virus. Armitage destroys the viral link, but it also causes Julian's body to self destruct. His last words to her is that maybe he'll get to meet the "real" D'anclaude.
- Sometime after his death, Armitage mourns his loss until Ross reminds her that Julian had backed up his programming into the main registry. Therefore, it might be possible to bring him back. He returns in Dual-Matrix, but only as a ghost program in the systems. He does provide information and remote control aid to Armitage.
- Larry Randolph (ラリー・ランドルフ Rarī Randorufu?)
- Voiced by: Masaharu Satou (Japanese), Ed Mannix (OVA), Michael Reynolds (Poly-Matrix) (English)
- Randolph is the liutenant of the Martian Police and head of the Technical Criminal SWAT division. He provides indiscriminate advice and opinions to those under him, as well as observations. Although he cannot do a thing to help Armitage and Ross through official channels, he does give them a well deserved pep talk–signing off surrounded by all of their comrades within the squad.
- Demetrio Mardini (デミトリオ・マルディーニ Demitorio Marudīni?)
- Voiced by: Kazuhiro Yamaji (Japanese), Michael McConnohie (English)
- Mardini is the vice president of an Earth Robotics Corporation and an admirer of Dr. Asakura's work. The antagonist of Dual-Matrix, he attempts to recreate his idol's work on Thirds, but his clones are unable to give birth to humans. Due to the declining birth rate on Mars, Demetrio plans to create human labor forces that never complain, soldiers who aren't afraid of dying, and increase the human population. He finds out that the original Armitage is still alive and tries to capture her to learn her reproduction secrets. He also blackmails Ross into not voting for the Robotic Rights Bill by holding Yoko hostage. He is subsequently killed by his own clone (controlled by Julian), when Armitage and her family make their escape.
- Eddie Barrows (エディー・バローズ Edī Barōzu?)
- Voiced by: Hirohiko Kakegawa (OVA) (Japanese), Lee Stone (OVA), Brian Cranston (Poly-Matrix) (English)
- Ross' wisecracking colleague in the Martian Police Department. He assists Ross throughout the events of Poly-Matrix, but in the end "squeals" on Ross to Randolph following the assault on the hospital.
- Chris Brown (クリス・ブラウン Kurisu Buraun?)
- Voiced by: Notobushi Hayashi (Japanese), Randy Luziaon (OVA), Stephen Apostolina (Poly-Matrix) (English)
- Lowell Gantz (ローウェル・ガンツ Rōueru Gantsu?)
- Voiced by: Wataru Takagi (Japanese), Doug Stone (OVA) (English)
- Eugene H. Allen (ユージン・H・アレン Yūjin Eichi Aren?)
- Voiced by: Hideyuki Tanaka (Japanese), Sam Strong (OVA) (English)
- Yoko (ヨーコ Yōko?)
- Voiced by: Yuka Imai (Japanese), Rebecca Forstadt (English)
- Ross and Armitage's biological daughter, who has a photographic memory. As far as Demetrio can tell, she is pure human.
- Mouse (修理屋マウス Mausu?)
- Voiced by: Takumi Yamazaki (Japanese), Ahmed Best (English)
- A third who assists Armitage's repairs.
- Fredrick O'Hara (フレデリック・オハラ Furederikku Ohara?)
- O'Hara is the chairman of the Mars Foundation. He sends Ross, under the alias of Kevin Oldman, to Earth to vote in favor of the Robotic Rights Bill, promising amnesty for his and Armitage's previous crime. He strongly believes that giving robots' rights will be beneficial to the future of humanity.
List of OVA episodes
- Episode 1: Electro Blood (50 Minutes)
- Episode 2: Flesh & Stone (30 Minutes)
- Episode 3: Heart Core (30 Minutes)
- Episode 4: Bit of Love (30 Minutes)
- Armitage III at the Internet Movie Database
- Armitage: Dual Matrix at the Internet Movie Database
- Armitage III (OVA) (anime) at Anime News Network's Encyclopedia
- Armitage III: Poly-Matrix (anime) at Anime News Network's Encyclopedia
- Armitage III: Dual-Matrix (anime) at Anime News Network's Encyclopedia