The are the fictional antagonists in the Kamen Rider Series

Kamen Rider Series

The is a metaseries of manga and tokusatsu television programs and films created by manga artist Shotaro Ishinomori. The various Kamen Rider media generally feature a motorcycle-riding superhero with an insect motif who fights supervillains often referred to as...

 Kamen Rider Fourze

Kamen Rider Fourze

is a Japanese tokusatsu drama in Toei Company's Kamen Rider Series, being the thirteenth series in the Heisei period run and the twenty-second overall. It began airing on September 4, 2011, the week following the conclusion of Kamen Rider OOO, joining Kaizoku Sentai Gokaiger in the Super Hero Time...

. Each of the Zodiarts is named after one of the Western constellation

Constellation

In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....

s, and each Zodiarts body is decorated with the pattern of the constellation it is named after. The name "Zodiarts" is derived from the English word .

A Zodiarts is a monstrous construct that is produced when a is activated by a person, then on known as a . From there, a Zodiarts Switch gathers a mysterious energy from space called that forms a Zodiarts around a human. These switches are provided by Mitsuaki Gamo to Amanogawa High students as they appear to have the potential to evolve the Zodiarts Switches' powers by their state of minds.

After the Zodiarts Switch is used several times in a row, it will announce "Last One" and the Zodiarts Switch will change its appearance, growing spikes and an eyeball-like structure, as well as changing the position of the button. When the Switcher activates the Switch at this point, the transformation becomes irreversible as the Switch drains its Switcher of their conscious mind and uses it to become a Zodiarts permanently. The Switcher's empty body is ejected from the Zodiarts, covered in a cobweb-like substance. In this state, the Zodiarts becomes extremely powerful and can only be defeated if targeted at point of its body where the Zodiarts Switch is located. From there, Kamen Rider Fourze

Kamen Rider Fourze (character)

is the primary and eponymous protagonist of the 2011-2012 Kamen Rider Series Kamen Rider Fourze. Kamen Rider Fourze's name is meant to resemble the number 40, as Fourze serves as a 40th anniversary for the Kamen Rider Series and there are 40 different powers he can access...

 can use one of his finishing attacks to destroy the monster and get the Zodiarts Switch. Once properly switched off, the Zodiarts Switch will vanish into a singularity

Singularity

Singularity or Singular points may refer to:-Mathematics:* Mathematical singularity, a point at which a given mathematical object is not defined or not well-behaved, for example infinite or not differentiable-Geometry:...

, returning the user's mind to its body.

Orion

is a member of the AGHS football club who became tired of how the team's members, particularly captain Shun Daimonji, treat him as their slave and never let him have a chance on the field. To get back at Shun, he is given a Zodiarts Switch that allows him to become the , a Zodiarts with intense brute strength which is armed with a club called the and a shield called the . Although he is initially defeated by the first appearance of Kamen Rider Fourze by the Kamen Rider's Rocket Drill Kick, the mysterious Scorpion Zodiarts returns the Zodiarts Switch to Miura, allowing him to use it once more to confront Shun. After Tomoko Nozama reveals the identity of the Zodiarts to Gentaro Kisaragi and Yuki Jojima, they reach Miura in time to convince him not to go through with his plans. However, Shun pushes Miura over the edge by kicking him out of the football club, driving him to use the Zodiarts Switch just as it enters its Last One state. As the monster has amassed enough energy to blow up the stadium, Kengo Utahoshi directs Kamen Rider Fourze to take the Orion Zodiarts into the upper atmosphere in order to destroy him with the Rocket Drill Space Kick, allowing the Zodiarts Switch to be turned off so Miura's mind can return to his body. Miura was hospitalized soon after from the ordeal.

Shunya Miura is portrayed by . Mizuno previously portrayed Fire-5/Jun Watari in Tomica Hero: Rescue Fire.

Chameleon

is a third-year student who is in the cheerleading squad, in addition to being one of Miu Kazashiro's "sidekicks". However, Tamae has become tired of Miu's two-year winning streak in the annual Queen Festival, a contest that votes for the "queen" of the student body. To stop Miu from winning her third year so she would be able to win the contest herself, Tamae is given the Zodiarts Switch that allows her to become the , a Zodiarts that can appear invisible as well as attack with its powerful tongue-like tendrils. To orchestrate her plan to remove Miu from the contest, Tamae begins to attack students that could be potential threats to her success. Then, when Miu takes the stage for the talent competition, Tamae fakes being attacked herself so she would be able to transform and cause a commotion, allowing for a video of Miu lambasting the student body to play. When her identity is revealed, Tamae fakes remorse to catch Miu off guard and injures her severely to remove her from the contest. However, Miu musters up enough strength to return to school despite her yet-to-recover injuries and wins back the hearts of the student body with her powerful speech. Tamae, enraged that her plan has failed, ignores Kengo's warning against using her Zodiarts Switch when it enters its Last One state. She attacks Miu as the Chameleon Zodiarts once more, but Kamen Rider Fourze is able to save the school's reigning "queen" and eventually destroys the Zodiarts with his Rider Rocket Drill Kick, gaining access to the Zodiarts Switch to shut it off. After Miu wins the contest for the third year in a row, she forgives Tamae for her actions, and renews their friendship under the promise that Tamae would beat Miu through honest means.

Tamae Sakuma is portrayed by .

Unicorn

is a first-year student member of the fencing team who used by JK as his human shield from bullies. As a result of taking the beatings, Nitta was unable to enter a fencing tournament before learning of JK's deception and vowed to take his revenge. The chance for payback on JK presented itself when the Scorpion Zodiarts gives him a Zodiarts Switch that allows him to transform into the . While fighting Kamen Rider Fourze, Nitta's desire for revenge causes a sudden evolution in his Zodiarts form where his horse-faced mask converts into the rapier. This new power, combined with his ability to project horseshoe-shaped energy projectiles, makes the Unicorn Zodiarts a force to be reckoned with in a fight. After capturing JK, Nitta amusingly allows him a chance for freedom by contacting someone for help, with full knowledge that no one in JK's circle would save him. However, Gentaro proves Nitta wrong as he manages to become Kamen Rider Fourze Elek States and destroys the Zodiarts with the Rider Ten Billion Volt Break. Though JK intends to beat the daylights out of Nitta for slighting him, Gentaro stops him while reminding him that he deserved it for his actions, while offering his friendship to Nitta.

Fumihiro Nitta is portrayed by

Hound

is the rebellious son of AGHS's Takashi Satake. Though he is a student who scores good grades, he is unhappy with his life and adopts delinquent hobbies and mannerisms. At some point, he receives a Zodiarts Switch from the Scorpion Zodiarts in order to transform into the and uses his newly gained abilities to be himself and go on a rampage, or "hunting" as he calls it, attacking anyone nearby. He fights with his powerful claws and the chain that hangs around his neck. The Hound Zodiarts can also fire a barrage of needle-like energy bullets from the dog's face on his chest. Eventually in his Last One state, the Hound Zodiarts gains a thickened hide and none of the usual attacks from the Kamen Rider work on him. While the Scorpion Zodiarts supports the Hound Zodiarts in fighting Kamen Rider Fourze, Shun Daimonji pilots the Powerdizer to hold the former off so the Kamen Rider can fight the Hound Zodiarts one-on-one and destroy him with the Rider Lightning Drill Kick.

Teruhiko Satake is portrayed by .

Altar

is a girl who has been blamed for various unexplained things in Amanogawa High, giving into the persecution and becoming the bad girl as she forms her own witches' coven

Coven

A coven or covan is a name used to describe a gathering of witches or in some cases vampires. Due to the word's association with witches, a gathering of Wiccans, followers of the witchcraft-based neopagan religion of Wicca, is also described as a coven....

 called the with other scorned social outcasts. She is given a Zodiarts Switch that allows her to transform into the , granting her powerful telekinetic powers via her staff. However, Ritsuko's passion for the occult evolves her Zodiarts form to also use pyrokinetic powers. Creating moon pendants for her followers to wear, Ritsuko uses her powers to make it appear that she and the members of her group are actually witches before Kengo exposes the deception. By then, using the Zodiarts Switch in its Last One state, the Altar Zodiarts proceeds to enact her plan to burn the entire school to the ground. When her plan is ruined, she becomes infuriated and overpowers Kamen Rider Fourze in battle. Upon transforming into Fire States, Kamen Rider Fourze absorbs her fire-based attacks before destroying her Zodiarts form with the Rider Exploding Shoot.

Ritsuko Usaka is portrayed by , who previously portrayed Amane Kurihara in Kamen Rider Blade

Kamen Rider Blade

, is a Japanese tokusatsu superhero television series. It is the fourteenth installment in the Kamen Rider Series. It aired on TV Asahi from January 25, 2004 to January 23, 2005. It is a joint collaboration between Ishimori Productions and Toei. Along with the standard insect motif of the Kamen...

.

Pyxis

is the president of Amanogawa High's astronomy club who is infatuated with Yuki and constantly stalks her. Obtaining a Zodiarts Switch, Makise becomes the longhorned beetle like and uses his dowsing rod-like horns to track down anything and also direct the motion of any object he points them at. In combat, the Pyxis Zodiarts can use the mentioned horns to slash his opponent, though in a very ineffective manner as Makise himself is not a competent fighter. After seeing her with Gentaro, overpowered by Kamen Rider Fourze and the Powerdizer in their first fight, a heart-broken Makise decides to make Yuki pay for her choice in friends. To that end, he pretends to help Yuki find the missing locker that connects to the Rabbit Hatch so he can destroy it, succeeding by redirecting the missiles from Fourze's Launcher Module. Soon after, Makise decides to exact his revenge on every girl who rejected him by having them get on a bus which he would force over an unfinished bridge. However, after the Zodiarts Switch assumes the Last One state, the Pyxis Zodiarts's scheme fails when Kamen Rider Fourze Elek States uses the Stealth Module to move around the Zodiarts undetected before breaking the horns on his arms with Billy the Rod. He is destroyed shortly afterwards. Back in his body, Makise receives swift and brutal retaliation from the girls.

Hiroki Makise is portrayed by .