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Icon-kabutoThis article is about a Worm in Kamen Rider Kabuto.

Viella Worm (ビエラワーム, Biera Wāmu, 17 & 18): A Worm with an extendable whip tentacle for the right hand that can double as a stinger. Destroyed by Drake's Rider Shooting.

Kamen Rider Kabuto[]

Viella Worm[]

KRKa-Viella Worm
  • Height: 217
  • Weight: 132

Powers and Abilities:

  • Human Duplication: Like all Worms, they can take the form of any human they see, duplicating their memories as well.
  • Clock Up: Like all molted Worms, they can trigger Clock Up, gaining the ability to move at incredible speeds while still observing the world around them at normal speed.


  • Whip:: the whip-like tentacle on his right arm freely uses it to strike and pierce his victims.

Behind the scenes[]


Viella Worm he was portrayed by an unidentified suit actor.

Concept Art[]

Viella Worm concept art

Viella Worm concept art

Viella Worm was designed by Yasushi Nirasawa (韮沢 靖, Nirasawa Yasushi).


  • Viella Worm's suit is retooled and modified for Cammarus Worm in later episodes.
  • The origin of the name "VIERA" is believed to come from the instrument "Viola", which is very similar to a violin.
  • Viella Worm appears to most likely be based off of a Valdiviella Insignis, a type of microscopic zooplankton.


Icon-kabuto Kamen Rider Kabuto
Masked Rider System Users
Soji Tendo (alternate) - Arata Kagami - Daisuke Kazama - Tsurugi Kamishiro - So Yaguruma - Shun Kageyama - Masato Mishima - Soji Tendo (Mimic)
Kabutick Riders (Movie-exclusive): Issei Kurosaki - Hidenari Oda - Tetsuki Yamato
Stageshow-exclusive Riders: Shadow - Native - Syuichi Tadokoro - Kouka Tendoin - Native Worm
Transformation Devices
Rider Belt - Rider Brace - Drake Glip - Sasword Yaiver - ZECT Buckle
The Zecters
Kabuto Zecter - Gatack Zecter - TheBee Zecter - Drake Zecter - Sasword Zecter - Hopper Zecter - Dark Kabuto Zecter - Hyper Zecter
Kabutick Zecters
Hercus Zecter - Ketaros Zecter - Caucasus Zecter
Kabuto: Kabuto Kunaigun - Zectmizer - Perfect Zecter
Gatack: Gatack Vulcan - Gatack Double Calibur
TheBee: TheBee Needle
Drake: Drake Glip - Zectmizer
Sasword: Sasword Yaiver - Sasword Antenna - Blood Vessels
ZECT Members/ZECTroopers: ZECT Gun - Machinegun Blade - Anti Mimic Bomb
Kabuto Extender - Gatack Extender - Machine Zectron - ZECT Command Car
Hiyori Kusakabe - Jyuka Tendou - Yumiko Takemiya - Gon - Jiiya
Other allies: Takeshi Hongo
Riku Kagami - Masato Mishima - Syuichi Tadokoro - Renge Takatori - Yuzuki Misaki - Shura Hokuto - ZECTroopers - Brightroopers - Shadow - Neotroopers
The Natives: Daigo Tachikawa - Syuichi Tadokoro - Negishi - Masato Mishima - Hiyori Kusakabe
Worms: Aracnea Worms (Aracnea Rubor - Aracnea Flavus - Aracnea Nigritia) - Lanpyris Worm - Bellcricetus Worm - Epilachna Worm - Pulex Worm - Verber Worms (Verber - Verber Rota) - Coleoptera Worms (Coleoptera Aeneus - Coleoptera Croceus - Coleoptera Argentum) - Musca Worm - Sectio Worms (Sectio - Sectio Acuere) - Formicaalubus Worms (Formicaalubus - Formicaalubus Oculus - Formicaalubus Maxilla) - Brachypelma Worms (Brachypelma Aurantium - Brachypelma Viridis) - Tarantes Worm Purpura - Geophilid Worms - Acarina Worms (Acarina - Acarina Amber) - Viella Worm - Sepultura Worm - Genomyas Worm - Culex Worm - Foliatus Worm - Cammarus Worm - Camponotus Worms (Camponotus Oculus - Camponotus Maxilla) - Cochlea Worm - Leptophyes Worm - Subst Worm
Executive Worms: Uca Worm - Cassis Worm