Worms

The Worms are the villains in the Kamen Rider Heisei series Kamen Rider Beetleborg. They are an alien life form that came from a meteor that destroyed the city district of Shibuya years prior to the series' timeline. However, the Worms known as Natives existed prior to the coming of the Shibuya Meteorite, through another meteorite that came 35 years ago.

Shibuya Meteorite
Years ago, a mysterious meteorite crashed into Shibuya; this brought along the extraterrestrial creatures known as Worms. During episode 41, Riku Kagami explains that another meteorite carrying the Natives arrived on Earth thirty-five years ago, explaining why fragments of the meteorite similar to those of the Shibuya Meteorite existed so long ago. The Natives that arrived on Earth worked with humans to create the Masked Rider System in order to fend off the threat of other Worms that would arrive later.

Classification
There exist two different species of Worms, the Natives and a second group known only as Worms. The Natives have a horn appendage attached to their heads in their Salis form and they are not as aggressive as the later Worms. The later group of worms also had two variations with less notable roles.

Natives
The first species of Worm, Natives are the Worms that arrived on Earth 35 years ago on a meteorite predating the Shibuya Meteorite. After assuming human identities, they developed the Masked Rider System to give to the humans that would form ZECT. In return, ZECT would protect them from the Worms that would arrive in the Shibuya Meteorite.

Daigo Tachikawa is the first Native to appear, and it is shown that certain Natives are able to summon the power of the Zecters. More Natives are revealed during episode 41, as their alliance with ZECT is clarified. Shuichi Tadokoro is also revealed to be a Native working for ZECT after an AMB accident forces him back into his Worm form. Sisryaworm, a Worm that was born from a Native mother, is the only Native Worm to be shown outside of a pupa form.

Negishi, a leader of the Natives appears in episode 45, and although he is offered deep respect, he seems to be very hyperactive. In episode 47 and 48, it is revealed that Negishi actually worked together with Mishima in order to turn humans into Natives using a special necklace, as Negishi believed that it was no other way for his kind and humans to co-exist. However, some Natives, such as Tadokoro, were able to live on as a human because they did not have the same beliefs as Negishi. Ultimately, Negishi's plan is foiled thanks to Kabuto and Gatack.

Worms
The second species of the mimetic alien life form, known only as "Worms" arrived on Earth seven years that caused the Shibuya meteorite crash. Hostile toward humans, Worms attempt to blend into the human population by copying the faces of their victims along with their memories. They only require a look at the human to copy their image, but once done so, they attempt to kill the original at all costs. The Worm believe the person that was mimicked now exists as a part of them due the fact they also acquired their victims' personalities, which can be a hindrance in few cases. Despite being able to copy both image and memory, they are unable to copy certain things such as scent and heat, and, as seen in Kamen Rider Decade, human reactions to nerve bundle strikes.

The pupa form is known as a Salis (サリース, Sarīsu), taking on the shape of a chrysalis. A Worm in a Salis state normally have a green body, but there have been scenarios where it was not so. After a Worm is threatened or endangered, it has the ability to molt, revealing a stronger form that can move at blinding speeds which comes from their high metabolism.

It is later revealed that Worm do not need to naturally molt, and their "cast" can be broken off or shattered. They also have the ability to revert back into a Salis form if necessary. When a Worm is destroyed, it explodes into flames that share its predominant color.

The main motifs of the Worm are animals that are arthropods, most commonly insects. The executives are the only Worm with non-insects motifs. Rena Mamiya/Ucaworm, Cammarusworm, Substworm, and Reiji Nogi/Cassisworm are all crustacean-type Worm. The Cochleaworm is surprisingly based on a mollusk, the animal family that is the total opposite of an arthropod.

Mutant Worm
Mutant Worm is a variation of the second group of Worms which eventually appeared on Earth. Its mode of operation differs from the other worms due to it making a pact to fulfill the wishes of its chosen targeted human, rather than killing them. It's not known how or why this Worm emerged. Its Salis form is white, differently from the green of the standard Worms. A mutant worm appears only in Kabuto episode 14.

Judah's Worms
Judah the antagonist of the All Kamen Rider: Rider Generation game, in an attempt to strengthen the Salis Worms that joined his army, artificially enhanced them, leaving them in an "semi-molting" state, which, although lacking the high speed abilities of their real molted form has a combat ability significantly stronger than standard Salis Worms. These Worms altered by Judah acquire a dark coloration for their bodies, while their claws become purple. The Salis Worm (Semi Molting) (ワームサナギ体脱皮直前, Wāmu Sanagi Karada Tappi Chokuzen) are original creations of the Rider Generation games and don't appear in the original Kabuto series.

Major Worms
Playing a significant role in the series, these Worms are usually Executives or otherwise important Worms that greatly influence the story. This class of worm are fully evolved and are the the most powerful class. These worms each have a unique appearance due to their individual evolution.

Executives
The upper-class Worms usually control massive groups of Worms. Very few Executives have been seen, but they each possess an enormous amount of power.


 * Rena Mamiya/Uca Worm
 * Reiji Nogi/Cassis Worm

Non-Executive

 * Tsurugi Kamishiro/Scorpio Worm

Native Class
Natives are commonly shown in an altered pupa form, but a few Natives have evolved and reached a higher stage in the Worm hierarchy. They are the first generation of worm that landed on earth after the meteor hit Shibuiya.


 * Hiyori Kusakabe/Sisyra Worm
 * Masato Mishima/Gryllus Worm

Minor Worms
Some of these lower-class Worms are subordinates of Executives, while others have no association with the majority of Worms. They serve mainly as monsters of the week.

Aracnea Worm sub-class
Spider-based Worms.


 * Aracnea Worm Rubor
 * Aracnea Worm Flavus
 * Aracnea Worm Nigritia

Verber Worm sub-class
Tailless Whip Scorpion-based Worms that targeted people in white.


 * Verber Worm
 * Verber Worm Rota

Coleoptera Worm sub-class
Scarab-based Worms.


 * Coleoptera Worm Aeneus
 * Coleoptera Worm Croceus
 * Coleoptera Worm Argentum

Sectio Worm sub-class
Mantis-based Worms


 * Sectio Worm
 * Sectio Worm Acuere

Formicaalubus Worm sub-class
Termite-based Worms, spared a doctor's life and assumed his form to target those in his care, turning them into drywood. Though their methods were odd, they still were Worms in nature.


 * Formicaalubus Worm
 * Formicaalubus Worm Oculus
 * Formicaalubus Worm Maxilla

Brachypelma Worm sub-class
Tarantula-like Worms that protected the Worm eggs.


 * Brachypelma Worm Aurantium
 * Brachypelma Worm Viridis

Geophild Worm sub-class

 * Geophilid Worm

Acarina Worm sub-class
Tick/Mite-like Worms.


 * Acarina Worm
 * Acarina Worm Amber

Camponotus Worm sub-class
Carpenter ant-like Worms exclusive to the Hyper Battle special.


 * Camponotus Worm Oculus
 * Camponotus Worm Maxilla

Other sub-classes

 * Lanpyris.jpgris Worm
 * Bellcricetus.jpgricetus Worm
 * Epilachna.jpgchna Worm
 * Pulex.jpg Worm
 * Musca.jpg Worm
 * Sepultura.jpga Worm
 * Sepultura Worm
 * Tarantes Worm Purpura
 * Genomyas.jpgyas Worm
 * Culex.jpg Worm
 * Foliatus.jpgtus Worm
 * Cammarus.jpgrus Worm
 * Cochlea Worm
 * Cochlea.jpgphyes Worm
 * Subst.jpg Worm