Worm (Kamen Rider)

The antagonists of Kamen Rider Kabuto. These creatures came from meteor of unknown origin which destroyed the city district of Shibuya seven years prior to the series' timeline (it was reveal in the movie GOD SPEED LOVE that this meteor is actually just a fragment of larger one).

Vey aggressive, Worms attempt to blend into the human population by mimicing the physical appearance of their victims along with their memories. They only need to look at the human to copy their looks, then they attempt to kill the original and copy the memories. However, the Worms believe the person that was mimicked now exists as a part of them due the fact they also acquired their victims' personalities. Despite being able to copy both look and memory, Worms are unable to copy certain things such as scent; in addition, their disguises can be neutralize by chemicals such as makeup.

Worm in pupa state is known as a Salis, taking on the shape of a Chrysalis. A Salis normally has a green body, except for the albino one known as a Mutation Salis which has a white body. When threatened or endangered, Worm has an ability to molt, revealing a stronger form that can move at blinding speeds which comes from their high metabolism. Some Worms do not need to naturally molt and their "cast" can be broken off or shattered. These Worms can revert back into a Salis form if necessary. Most of Worms in molted state resemble arthropods, specifically insects. The Executives Worms are, however, resemble crustaceans and at least one mollusk Worm known to exist.

Native
There are actually another groups of Worms, the ones known as Native arrived on Earth 35 years ago. Natives usually live in peace, blending in with human society, some actually can create their own human forms without stealing other identities. At least one Native known to born naturally from Native mother. In addition, it is possible to convert human into a Native.

Natives also developed the Masked Rider System for the humans that would form organization known as ZECT. In return, ZECT would protect Natives from other Worms that might arrive. There are eight known Zecters within the Masked Rider System, each allowing the user to become a different Kamen Rider. The Zecters appear instantaneously from the ZECT headquarters to the selected personnel so that they may transform into the respective Rider to fight any Worms in the vicinity. Most Rider possessed two forms such as the bulky armored cocoon-like Masked Form and the sleeker Rider Form which can use the Clock Up, a system that allows the Rider to move at high speed to match the Worms.

Notable Worms

 * Uca Worm (Rena Mamiya)
 * Cassis Worm (Reiji Nogi)
 * Scorpio Worm (Tsurugi Kamishiro / Kamen Rider Sasword)
 * Sisyra Worm (Hiyori Kusakabe - Native)
 * Gryllus Worm (Masato Mishima - Native)