This article is about a/an transformation device in Kamen Rider Blade.
―Transformation announcement[src]

The Transformation Belt Chalice Rouzer (変身ベルト カリスラウザー Henshin Beruto Karisu Rauzā) is a belt-type card reader exclusively for Kamen Rider Chalice, originally possessed by the Joker Undead[1]. In response to Hajime's will, it appears in a form worn on the waist[1].

It allows the Joker Undead to transform into any other Undead when its respective Rouse Card is scanned through the Slash Reader (スラッシュ・リーダー Surasshu Rīdā) on the center of the buckle[2]. Thus, it served as the basis for BOARD's Rider System technology. The Chalice Rouzer is used in this way by Hajime Aikawa to transform into Kamen Rider Chalice by mimicking the Mantis Undead.

The buckle part Rouser Unit (ラウザーユニット Rauzā Yunitto) can be removed from the belt combined with the Chalice Arrow in order to scan Rouse Cards for initiating Vesta effects and special attacks[1] instead of transforming into the associated Undead. This also allows the effects of Rouse Cards to be combined in Rouse Combos. This functionality became the basis for the BOARD Riders' Rouzers.

The Chalice Rouser's central part is initially green, as seen when it is worn by the Joker Undead in its normal form. After the Joker Undead scans a Rouse Card and transforms into another Undead, it becomes red. Both Hajime and Kazuma Kenzaki are seen with this version of the Chalice Rouzer. The Albino Joker possessed its own Chalice Rouzer, which is white instead[3].

Kamen Rider Decade

The World of Blade version of Chalice Rouzer is instead another Rider System created in order to transform into the forms of the sealed Undead. Hajime Shijyo used it with the Mantis Undead Rouse Card to transform into Kamen Rider Chalice. Welcome to the Blade RestaurantBlade Blade



  • The overall design of the Chalice Rouzer resembles a Heart, matching Hajime's choice of card suit. In-series, this is unusual as the Joker is able to transform into Undead of any suit. This is further complicated by Kenzaki and Junichi's Rouzer also heart-themed, despite them having no association with the Hearts Suit.



  1. 1.0 1.1 1.2 Shogakukan <Televi-kun Deluxe Favorite Collection>. (2005). "Kamen Rider Blade Super Complete Works". p. 23. ISBN 4-09-105103-0.
  2. DeAgostini Japan. (2016). "Kamen Rider Official Perfect File". p. 3, "Kamen Rider Chalice".
  3. Media Works. (2005). "Kamen Rider Blade Hybrid File". p. 91. ISBN 4-8402-3093-5.


Icon-blade Kamen Rider Blade
BOARD Rider System Users
Primary: Kazuma Kenzaki - Sakuya Tachibana - Mutsuki Kamijo
Keroberos Riders (Movie exclusive): Junichi Shimura - Natsumi Miwa - Shin Magaki
Gear: Blay Buckle - Garren Buckle - Leangle Buckle - Rouzers - Rouze Cards - Rouze Absorber - Chalice Arrow - Wild Slasher - Glaive Buckle - Lance Buckle - Larc Buckle
Rider Machines: Blue Spader - Red Rhombus - Green Clover - Shadow Chaser
Hiroshi Tennoji - Kei Karasuma - Shiori Hirose - Yoshito Hirose
Jacaranda Cafe
Kotaro Shirai - Haruka Kurihara - Amane Kurihara
The Undead
Joker: Hajime Aikawa - Junichi Shimura - Kazuma Kenzaki (post-series)
The Royal Club:

♠️ Spade: King - Takahara - Yazawa

♦️ Diamond: Kanai - Azumi - Isaka
♥️ Heart: Kamata - Miyuki Yoshinaga - Shinmei
♣️ Club: Noboru Shima - Hikaru Jō - Daichi
Category Ace:

Beetle Undead - Stag Undead - Spider Undead - Mantis Undead - Kerberos

Category 2-10:

♠️ Spade: Lizard Undead - Lion Undead - Boar Undead - Locust Undead - Deer Undead - Trilobite Undead - Buffalo Undead - Jaguar Undead - Scarab Undead

♦️ Diamond: Armadillo Undead - Frog Undead - Pecker Undead - Whale Undead - Fly Undead -Tortoise Undead -Bat Undead - Zebra Undead - Chameleon Undead
♥️ Heart: Human Undead - Hammerhead Undead - Dragonfly Undead - Shell Undead - Hawk Undead - Plant Undead - Moth Undead - Camel Undead - Centipede Undead
♣️ Club: Bee Undead - Mole Undead - Rhinoceros Undead - Cobra Undead - Polar Undead - Jellyfish Undead - Scorpion Undead - Squid Undead - Tapir Undead
Other: Darkroaches - AlbiRoaches - Titan - Mold Undead - Jashin 14 - Trial B - Trial D - Trial E - Trial F - Trial G
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