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Note: This article is about the TV series, for the manga see: List of Chaotic Century Graphic Novel chapters.
Zoids: Chaotic Century
English intro
Japanese Name ゾイド -ZOIDS-
Name Translation Zoido
Genre Adventure, Comedy, Mecha
Director Takao Kato
Studio Shogakukan Productions.
Network TBS, Cartoon Network, Ten Network (Cheez TV)
First Aired 1999-09-04
Last Aired 2000-12-23
Episodes 67

Zoids: Chaotic Century is the first anime series based on TOMY's Zoids franchise.

Chaotic Century was the second Zoids series to be dubbed in English, with Zoids: New Century being broadcast earlier in the United States. In Japan, the anime was simply called Zoids; Western markets received it under the name Chaotic Century.

Although the entire series is called Chaotic Century, for ease of navigation, this wiki separates the two broadcast seasons into distinct articles: Chaotic Century and Guardian Force.

A Blu-ray version of Chaotic Century was released on August 2nd, 2013. The disks were sold as a box set, or optionally came with a limited edition clear HMM Blade Liger.

Series background[]

Zoids: Chaotic Century is set in the far reaches of the Milky Way, on Planet Zi. On Zi, there are metallic life-forms known as Zoids, which possess powerful fighting capabilities. Throughout the recent history of the series, Zoids have been used as weapons in an ongoing war between the Helic Republic and Guylos Empire.

The setting of Chaotic Century is a few years after the most recent war between the Helic Republic and the Guylos Empire. The two nations were, at the beginning of the series, observing a ceasefire, although ambushes and minor assaults had occasionally been initiated by both sides.

The series is largely set in a desert environment, although many other, mostly rural, locations are visited and re-visited as the plot progresses. The setting is dominated by the wartime themes, and most of the technology and infrastructure featured in the series is seen in a militaristic context.


Prior to the series there was a prolonged war between two factions, the Guylos Empire and the Helic Republic, which ended in a ceasefire. Not much is stated about the war other than that Van's father fought and died in it. The series starts with Van Flyheight being chased by a group of bandit Zoid pilots into a ruin in the desert near Van's hometown. It is here that Van discovers the organoid Zeke in a capsule. After an initial conflict, Van and Zeke partner up, with Zeke reviving an abandoned Shield Liger, which Van uses to fight off the bandits.

After that, Van also discovers a girl, whom he dubs "Fiona ", in the same ruins that he found Zeke in, although she has no memory of who she is. When Van returns to his village, the bandits return and try to capture Zeke. To keep his family and friends safe from the bandits, Van leaves the village and sets out to travel the world with Fiona. During that time in some more ruins, Van hears Fiona mention something called Zoid Eve, which becomes Van's ultimate goal throughout the series.

The war eventually flares up and Van, along with Fiona, the mercenary Irvine and the transporter Moonbay, ends up warding off some Imperial attacks on Republican forces. After that, Van, Fiona, Irvine and Moonbay attempt to stay out of the war. However, Van ends getting involved when he meets the Guylos ace pilot, Raven, whom he quickly develops a grudge against after witnessing Raven's brutal behaviour and hatred of Zoids. Although he attempts to fight Raven, he proves no match for him in their first battle. Van later challenges Raven again, and loses once more.

In this battle, Zeke suffers near-fatal damage, though Van manages to save him. During this time the Imperial Army manages to march farther and farther into Republican territory but are eventually stopped by the deployment of the Republic's new Gojulas. Van and the others eventually reach the Republic's capital in hopes of finding information about Zoid Eve, but only end up getting caught up in the Empire's assault on the city. During the siege, Van is finally able to defeat Raven, the duel ending with the destruction of Raven's Zaber Fang.

The war is stopped when the Empire's Crown Prince Rudolph orders a ceasefire, although his advisor, Prozen, refuses to give up on conquering the Republic, and so attempts to assassinate the prince. His attempt is foiled by the bandits Rosso and Viola, who kidnap the prince in an attempt to blackmail the Empire. During this time, Prozen finds the remains of the Death Saurer, attempts to revive it, and also creates the Geno Saurer for Raven to use.

Raven uses the Geno Saurer to destroy Van's Shield Liger, but was unaware that Van survived and that Zeke and Fiona revived the Shield Liger as the Blade Liger. During this time it is revealed that Fiona is actually an "Ancient Zoidian", a member of a race that existed long before humans came to the Planet Zi. Rudolph, separated from Rosso and Viola after a fight with Raven, joins Van and his friends who try to take him to the Empire's capital Guygalos to stop Prozen from taking over the Empire and restarting the war.

During this time, parts of the Imperial Army (both those loyal to Prozen and those manipulated into fighting) try to stop them. Eventually, Van faces Raven again, with the Blade Liger successfully defeating the Geno Saurer. Although Rudolph is returned to the capital, Prozen attempts to use the revived Death Saurer to take control, which goes on a rampage and nearly destroys the capital. Although the forces of the Empire and Republic combined are powerless to stop it, with Van's help, they are able is able to destroy the Death Saurer and (apparently) kill Prozen in the process. Rudolph is then crowned the Emperor and peace finally starts to settle between the Empire and Republic, but Van and Fiona don't take part in the celebration and instead leave to find Zoid Eve.


For detailed information, see each character's respective pages on the table provided below
Chaotic Century Characters
Van Flyheight | Irvine | Moonbay | "Fiona" Elisi Linette | Zeke| Dr. D | | Rosso | Viola | Stinger | Minor Characters
Helic Republic
Rob Herman | Krueger | O'Connell | Ford | President Camford
Guylos Empire
Gunther Prozen | Marcus | Karl L. Schubaltz | Rudolph Zeppelin III | Raven


Main Zoids[]

The most common Zoids seen throughout the series are Van's Shield Liger, Irvine's Command Wolf and Moonbay's Gustav. The Helic Republic is most commonly seen using Command Wolves, Godos, Gordos, Shield Ligers, and Gojulas, while the Guylos Empire seems to favor Zaber Fangs, Redlers, Rev Raptors, Molgas, Iron Kongs, and both Red Horns and Dark Horns.


Main article: Organoids

Organoids are rare types of Zoids that are barely left over from the Ancient Zoidian's reign on Zi. There are only four known to exist by the end of the series, one of which was destroyed and rebuilt.


Main article: List of Zoids Chaotic Century/Guardian Force episodes


Chaotic Century was originally broadcast from 1999-09-04 to 2000-12-23 in Japan and 2002-02-18 to 2002-05-16 in the United States.

Differences between the storylines[]

Battle Story[]

Although there are many similarities between Chaotic Century and the 'New Battle Story' accompanying the New Japanese Release, the two storylines are considered to be inherently different, and are believed to occur in alternate continuities. Listed below are the main differences:

  • The Zoidian race, known as the Ancient Zoidians in the anime, were wiped out (except for three) by the creation of the Death Saurer long before human colonists discovered Zi. In the Battle Story, Zi is still inhabited mainly by Zoidians, and the term "Ancient Zoidians" merely refers to Zoidians from the era before the Helic Republic was formed.
  • Both the Guylos Empire and the Helic Republic are based on a single continent (shown in Guardian Force to match the Battle Story's Western Continent). No mention of the Zenebas Empire or the Dark Continent of Nyx is made in the anime, although Prozen does imply in passing that other continents exist.
  • None of the events in Guardian Force occurred in the Battle Story. In addition, the Zoid Eve, which supplies power to all Zoids in Chaotic Century/Guardian Force, does not exist in the Battle Story.

Deleted scenes[]

In Japan, there are different censorship regulations to English-speaking nations, as such, several scenes present in the Japanese version were not broadcast on most foreign TV networks. These scenes were cut out or shortened during localisation, most to remove drug references, violent scenes (blood, etc.), and any implied nudity or sexuality.


  • Zoids: Chaotic Century is the only saga of the first four anime series that started off as a manga: Kijū Shinseiki Zoids (機獣新世紀ゾイド; lit: New Century of Animal Machines Zoids), authored by Michiro Ueyama (上山道郎; Ueyama Michiro), was first published in April 1999[1]. The series was first broadcasted as an anime a few months later[2].
  • Anime News Network lists the production cost of the Chaotic Century anime series to be ¥9,000,000 per episode. This equates to roughly $81,743.90 in 1999.
  • Episode 29 of Chaotic Century is titled "Heroes of the Sky"; in this episode, a new song is introduced and played during a key scene when the Storm Sworders extreme speed capabilities are displayed. Later in Guardian Force episode 58, as the Storm Sworders are used by Irvine and Thomas in the extreme space mission against Hiltz, the same song is played again and Moonbay comments on their heroism: "Way to go guys! Heroes on land... Heroes at sea... And now they've added Heroes of the Sky".
  • Along with music from many other Anime and Games, background music from Chaotic Century and Guardian Force can be heard during the Tokyo 2020 Olympic games. One example is during the women's Judo post-medal interview. [1]

Openings and Endings[]

The original Japanese anime used multiple openings and endings over the course of both seasons. The clips used did not appear in the actual episodes, as they were specifically designed for these openings and endings. Only one opening song was used, although the opening video was updated multiple times to better reflect the events in the episodes. Four different songs were used as endings, each with a different accompanying video. In the English dub, there is only one opening and one ending, both of which use episode clips for the video and modified versions of background tracks ("Destructive Impulse" and "Pursuit", respectively) for the music. The Latino dub uses the Japanese opening and ending videos (not even removing the Japanese credits) but with a Spanish version of Wild Flowers as the music for every opening and ending. In contrast, the Italian dub used a slightly modified version of the American opening (removing clips from the start and end, while adding a clip of Zeke fusing with the Shield Liger) as both opening and ending videos, along with an original theme song by Giorgio Vanni simply titled Zoids.

The following full-voice songs were featured in the Japanese release only.

  1. Wild Flowers by RAMAR
  1. Song for... by Dear
  4. Your song by EARTH