Kamen Rider Den-O (Rider) (2025)

Once Ryotaro activates any of the four buttons on the Rider pass, the chosen Imagin then takes control and a transformation follows, forming the Aura Armor for Den-O. The Imagin can also transform on their own supposing they have their own physical forms and are not in need of a host body.

Sword
Rod
Ax
Gun
Wing

Sword Form

"Sword Form!"

―Transformation announcement^[src]

Rider Statistics^[2]

Rider Height: 190 cm.
Rider Weight: 87 kg.

Rider Senses^[2]

Eyesight: 5 km.
Enemy Sensor: 2 km.

Ability Parameters

Punching Power: 5 t.
Kicking Power: 7 t.
Resistance: 10 t.
Maximum Jump Height: 35 m.
Maximum Running Speed: 100 m. per 5.2 sec.

When possessing Ryotaro (or anyone else) or by himself, Momotaros can assume Den-O's Sword Form (ソードフォーム, Sōdo Fōmu) through the Terminal Buckle, the first and most used form in the series. When in Sword Form he uses the DenGasher as a standard sword-style weapon. This form is the most balanced among Den-O's forms, probably due to Momotaros' prominence among the other Imagin.

Sword Form's typically used Full Charge finisher is the Extreme Slash (エクストリームスラッシュ, Ekusutorīmu Surasshu), which is merely labeled by Momotaros as "My Finishing Move!" (俺の必殺技！, Ore no Hissatsu Waza!), and famously gives it "Parts" (パート, Pāto), despite said parts, those being Parts 2, 2 Dash, 3, and 5 (four was skipped because of tetraphobic reasons, even if Momo wouldn't admit it to Ryotaro) being identical to each other, in the aspect that the blade of the DenGasher detaches and flies in the path of Den-O's swings, ending with a chop that bifurcates. He also uses a "Special Version" (特別編, Tokubetsu-hen) in I'm Born! to finish off Gaoh which resembles the aforementioned parts, the only difference is that the Full Charge is used twice, with the blade striking Gaoh across the chest when it emerged from the ground.

There is also a Final Version (ファイナルバージョン, Fainaru Bājon) used against the Death Imagin which uses energy from the other Taros, Sieg, and Kamen Rider Zeronos Vega Form.

In the Cho Den-O series, Sword Form also has a triple Roundhouse DenRider Kick (デンライダーキック, Den Raidā Kikku), with Momotaros dubbing this his "Super Finishing Attack".

The DenKamen Mask resembles two halves of a peach, which is based on the story of Momotaro, with Momo being based off of the Oni Momotaro fought, much to Momo's constant chagrin, as Imagin are given their body's form from their host's imagination, with Ryotaro's imagination being notoriously poor.

Sword Form is composed of the following parts:^[3]

DenKamen (電仮面, Den Kamen, lit. ‘Electric Mask’): The red overall peach-like mask. It is a mask dedicated to Sword Form.
Persia Scan Eye (ペルシアスキャンアイ, Perushia Sukyan Ai): The eyes. It can see in a wide angle within a wide range. It can distinguish human faces up to 5km away and objects as close as 0.05mm. It also has a night vision function, allowing Den-O to see targets up to 1km away in the dark thanks to infrared irradiation.
Persia Antenna (ペルシアアンテナ, Perushia Antena): Antennae ‘peach stalks’ on top of the Persia Scan Eye. They catch air vibration waves and convert them into electrical signals, allowing Den-O to hear wide range of sounds from 40Hz to 100,000Hz ultrasonic waves.
O Signal (Oシグナル, O Shigunaru): The green sensor on the forehead. Allows Den-O to detect Imagin within a range of 2km.
Bibreast Plate (ビブレストプレート, Biburesuto Purēto): The chestplate. It is made out of Aura Armor (オーラアーマー, Ōra Āmā), and can alleviate 10 tons of impact.
Den Rail (デンレール, Den Rēru): A rail-shaped mold that runs vertically on the chest. It has the same shape as the rails on Den-O’s head, and is used as a track for whenever the DenKamen moves.
Aura Skin (オーラスキン, Ōra Sukin): The bodysuit. It can be considered Den-O’s ‘skin’, and an aura covers it. It has excellent defensive capabilities and reduce currents of 500 volts as well as mage caused by diamond-hard cutting edges.
Den Gauntlets (デンガントレット, Den Gantoretto): The forearm armor that stretches to the back of the hands. They are a type of Aura Armor that allows Den-O to withstand shocks from executing special attacks.
Wrist Bangles (リストバングル, Risuto Banguru): Silver bracelets around the wrists. They enhance the energy dissipation effect of the mind and body, improving the secretion of adrenaline, therefore improving athletic ability and as a result improves punching force.
Den Cuisses (デンキュイス, Den Kyuisu): The thigh armor. They discolor depending on Den-O’s form. In Sword Form, they take on a red coloration.
Den Poleyns (デンポレイン, Den Porein): The knee armor. Increases destructive power of knee kicks.
Den Greaves (デングリーブ, Den Gurību): The shin armor. They are a type of Aura Armor that protects the shins from any attack.
Ankle Bangles (アンクルバングル, Ankuru Banguru): Silver anklets around the ankles. They have the same effect as the Wrist Bangles.
Den Sabotons (デンサバトン, Den Sabaton): The feet. They are a type of Aura Armor that protects the insteps.

Sword Form's ending theme is entitled "Double-Action".

Appearances: Den-O Episodes 1-11, 14, 16, 18-20, 23, 26-27, I'm Born!, 28, 30, 32-33, 36, 38-39, 41, 44-45, 49, , , Episode Red: Zero no Star Twinkle, Episode Blue: The Dispatched Imagin is Newtral, Episode Yellow: Treasure de End Pirates, Kamen Rider Heisei Generations Forever, Zi-O Episode 40

Rod Form

"Rod Form!"

―Transformation announcement^[src]

Rider Statistics^[4]

Rider Height: 187 cm.
Rider Weight: 102 kg.

Rider Senses^[4]

Eyesight: 5 km.
Enemy Sensor: 2 km.

Ability Parameters

Punching Power: 4.5 t.
Kicking Power: 9 t.
Resistance: 10 t.
Maximum Jump Height: 20 m.
Maximum Running Speed: 100 m. per 9 sec.
Maximum Swimming Speed: 100 kn. (approx. 100 m. per 1.94 sec.)

Special Attacks^[5]

DenRider Kick: 20 t.

When possessing Ryotaro (or anyone else), or by himself, Urataros can assume Rod Form (ロッドフォーム, Roddo Fōmu). The DenGasher forms into a rod-style weapon in this form. Rod Form has the ability to fight underwater as well as extra protection. Stats-wise compared to Sword Form, it has increased kicking power, while losing some speed & punching power, and a drop in max jumping height. This is one of the least seen forms, as Urataros rarely fights but comes through when a fight is close to water or when the other Imagin are unable to fight.

Rod Form's Full Charge finisher is also one of the two base forms that have a Rider Kick, the second being Sword Form in the Cho Den-O Series. Urataros first performs the Solid Attack (ソリッドアタック, Soriddo Atakku), where he throws the charged DenGasher like a harpoon, which when it makes contact, it turns into a paralyzing blue hexagonal symbol, shaped like that of Urataros' own belt buckle. Once done, he attacks with the DenRider Kick (デンライダーキック, Den Raidā Kikku) to defeat the stunned opponent. The Aura Armor and DenKamen mask resembles a Sea Turtle, the animal associated with the story of Urashima Taro.

Rod Form is composed of the following parts:^[6]

DenKamen (電仮面, Den Kamen, lit. ‘Electric Mask’): The blue overall turtle-like mask. It is a mask dedicated to Rod Form.
Hexagonal Scan Eye (ヘキサゴンスキャンアイ, Hekisagon Sukyan Ai): The eyes. It can see in a wide angle within a wide range. It can distinguish human faces up to 5km away and objects as close as 0.05mm. It also has a night vision function, allowing Den-O to see targets up to 1km away in the dark thanks to infrared irradiation.
Strader (ストレイダー, Sutoreidā): Antenna-like horn parts extending from the DenKamen. They catch air vibration waves and convert them into electrical signals, allowing Den-O to hear wide range of sounds from 40Hz to 100,000Hz ultrasonic waves.
O Signal (Oシグナル, O Shigunaru): The blue hexagon sensor on the forehead. Allows Den-O to detect Imagin within a range of 2km.
Regulator (エレギュレーター, Eregyurētā): The regulator of the DenKamen. It has the ability to generate oxygen and hydrogen by electrolyzing water. This allows Den-O to perform activities and battle underwater.
Hydro Jet (ハイドロジェット, Haidoro Jetto): The shoulders. It is a part that generates propulsion by burning the hydrogen produced by the Regulator and converts it into energy, allowing Den-O to move at high speeds of up to 100 knots underwater.
Armor Kelon (アーマーケロン, Āmā Keron): The chestplate. It is made out of Aura Armor (オーラアーマー, Ōra Āmā), and can alleviate 10 tons of impact.
Den Rail (デンレール, Den Rēru): A rail-shaped mold that runs vertically on the chest. It has the same shape as the rails on Den-O’s head, and is used as a track for whenever the DenKamen moves.
Aura Skin (オーラスキン, Ōra Sukin): The bodysuit. It can be considered Den-O’s ‘skin’, and an aura covers it. It has excellent defensive capabilities and reduce currents of 500 volts as well as mage caused by diamond-hard cutting edges.
Den Gauntlets (デンガントレット, Den Gantoretto): The forearm armor that stretches to the back of the hands. They are a type of Aura Armor that allows Den-O to withstand shocks from executing special attacks.
Wrist Bangles (リストバングル, Risuto Banguru): Silver bracelets around the wrists. They enhance the energy dissipation effect of the mind and body, improving the secretion of adrenaline, therefore improving athletic ability and as a result improves punching force.
Den Cuisses (デンキュイス, Den Kyuisu): The thigh armor. They discolor depending on Den-O’s form. In Rod Form, they take on a blue coloration.
Den Poleyns (デンポレイン, Den Porein): The knee armor. Increases destructive power of knee kicks.
Den Greaves (デングリーブ, Den Gurību): The shin armor. They are a type of Aura Armor that protects the shins from any attack.
Ankle Bangles (アンクルバングル, Ankuru Banguru): Silver anklets around the ankles. They have the same effect as the Wrist Bangles.
Den Sabotons (デンサバトン, Den Sabaton): The feet. They are a type of Aura Armor that protects the insteps.

Rod Form's ending theme is entitled "Double-Action Rod form".

Appearances: Den-O Episode 6, 8-9, 15, 18, 22, 24, 27, I'm Born!, 34, 42, 44, 49, , , Episode Red: Zero no Star Twinkle, Kamen Rider Heisei Generations Forever

Ax Form

"Ax Form!"

―Transformation announcement^[src]

Rider Statistics^[7]

Rider Height: 185 cm.
Rider Weight: 93 kg.

Rider Senses^[7]

Eyesight: 5 km.
Enemy Sensor: 2 km.

Ability Parameters^[7]

Punching Power: 8 t.
Kicking Power: 5 t.
Resistance: 10 t.
Maximum Jump Height: 30 m.
Maximum Running Speed: 100 m. per 7 sec.

Special Attacks

Dynamic Chop: 1/2 of Boisterous Punch^[8] (15 t.)

When possessing Ryotaro (or anyone else), or by himself, Kintaros assumes Ax Form (アックスフォーム, Akkusu Fōmu). This form of Den-O utilizes in sumo-based combat, as well with the DenGasher forms an ax for short-ranged attacks. Compared to Sword Form, Ax Form gains increased punching power and defenses but loses speed and kicking power.

This form is Den-O's physically strongest base form due to Kintaros' own brute strength. Kintaros tends to fight as Den-O whenever he senses crying or when hears anything similar to the Japanese word for "cry" (鳴く, Naku).

This form's Full Charge finisher is the Dynamic Chop (ダイナミックチョップ, Dainamikku Choppu), which consists of Kintaros charging the DenGasher, then chucking it skyward, jump up to catch it, then come down with a energized DenGasher backed with the momentum of the fall. Typically, Kintaros says the name of the finisher afterwards, but he has said this phrase prior to making the move once.

The aura armor is golden yellow and the motif is of an axe, with a DenKamen Mask resembling the kanji for gold (金), all of which are elements to the story of Kintaro.

Ax Form is composed of the following parts:^[9]

DenKamen (電仮面, Den Kamen, lit. ‘Electric Mask’): The yellow overall blade-like mask. It is a mask dedicated to Ax Form, and has the ability of both eyes and ears.
Lambus Scan Eye (ランバススキャンアイ, Ranbasu Sukyan Ai): The eyes. It can see in a wide angle within a wide range. It can distinguish human faces up to 5km away and objects as close as 0.05mm. It also has a night vision function, allowing Den-O to see targets up to 1km away in the dark thanks to infrared irradiation.
Maska Reader (マサカリーダー, Masaka Rīdā): A crest-shaped ax blade in the centre of the Den Kamen that can inflict fatal damage at an enemy with a head butt. It catches air vibration waves and converts them into electrical signals, allowing Den-O to hear wide range of sounds from 40Hz to 100,000Hz ultrasonic waves.
O Signal (Oシグナル, O Shigunaru): The yellow slab behind the Maska Reader in the centre of the Den Kamen. Allows Den-O to detect Imagin within a range of 2km.
Gradational Breast (グラデュアリーブレスト, Guradyuarī Buresuto): The chestplate. It is made out of Aura Armor (オーラアーマー, Ōra Āmā), and can alleviate 10 tons of impact. It is the most defensive chestplate out of all of Den-O's four primary forms.
Den Rail (デンレール, Den Rēru): A rail-shaped mold that runs vertically on the chest. It has the same shape as the rails on Den-O’s head, and is used as a track for whenever the DenKamen moves.
Aura Skin (オーラスキン, Ōra Sukin): The bodysuit. It can be considered Den-O’s ‘skin’, and an aura covers it. It has excellent defensive capabilities and reduce currents of 500 volts as well as mage caused by diamond-hard cutting edges.
Den Gauntlets (デンガントレット, Den Gantoretto): The forearm armor that stretches to the back of the hands. They are a type of Aura Armor that allows Den-O to withstand shocks from executing special attacks.
Wrist Bangles (リストバングル, Risuto Banguru): Silver bracelets around the wrists. They enhance the energy dissipation effect of the mind and body, improving the secretion of adrenaline, therefore improving athletic ability and as a result improves punching force.
Den Cuisses (デンキュイス, Den Kyuisu): The thigh armor. They discolor depending on Den-O’s form. In Ax Form, they take on a yellow coloration.
Den Poleyns (デンポレイン, Den Porein): The knee armor. Increases destructive power of knee kicks.
Den Greaves (デングリーブ, Den Gurību): The shin armor. They are a type of Aura Armor that protects the shins from any attack.
Ankle Bangles (アンクルバングル, Ankuru Banguru): Silver anklets around the ankles. They have the same effect as the Wrist Bangles.
Den Sabotons (デンサバトン, Den Sabaton): The feet. They are a type of Aura Armor that protects the insteps.

Ax Form's ending theme is entitled "Double-Action Ax form".

Appearances: Den-O Episodes 10-12, 15, 18, 23, 24, 27, I'm Born!, 28, 31, 35, 40, 44, 49, , , Episode Yellow: Treasure de End Pirates, Kamen Rider Heisei Generations Forever

Gun Form

"Gun Form!"

―Transformation announcement^[src]

Rider Statistics^[10]

Rider Height: 197 cm.
Rider Weight: 98 kg.

Rider Senses^[10]

Eyesight: 5 km.
Enemy Sensor: 2 km.

Ability Parameters^[10]

Punching Power: 6 t.
Kicking Power: 10 t.
Resistance: 10 t.
Maximum Jump Height: 42 m.
Maximum Running Speed: 100 m. per 4 sec.

When possessing Ryotaro (or anyone else), or by himself, Ryutaros assumes Gun Form (ガンフォーム, Gan Fōmu). The DenGasher forms a gun for short and long ranged attacks.

Gun Form displays an increase in power, speed, and defense easily making it the most powerful out of Den-O's four basic Imagin forms, though the problem with the form lies mainly with its user's mentality. Ryutaros tends to fight on a whim, as he overpowers the other Taros and Ryotaro himself, and he is the least skilled (presumably because of his age) and tends to cause more collateral damage than the other forms due to his low precision skills and the high power of the DenGasher's ammunition.

Ryutaros incorporates break dancing into his fighting style making his movement somewhat unpredictable, though this often helps with creating collateral damage in the first place, as the wild shots would only hit the surroundings of the opponents early on.

This form's finisher is the Wild Shot (ワイルドショット, Wairudo Shotto), where a ball of energy forms in the DenGasher's muzzle, which is also fed by the energy from the orbs on Gun Form's torso armor.

The Aura Armor and DenKamen resemble a dragon, the animal associated with Tatsu no ko Taro.

Gun Form is composed of the following parts:^[11]

DenKamen (電仮面, Den Kamen, lit. ‘Electric Mask’): The purple overall dragon-like mask. It is a mask dedicated to Gun Form.
Victory Scan Eye (ヴィクトリースキャンアイ, Vuikutori Sukyan Ai): The eyes. It can see in a wide angle within a wide range. It can distinguish human faces up to 5km away and objects as close as 0.05mm. It also has a night vision function, allowing Den-O to see targets up to 1km away in the dark thanks to infrared irradiation.
O Signal (Oシグナル, O Shigunaru): The green sensor on the forehead. Allows Den-O to detect Imagin within a range of 2km.
View Trader (ビュートレーダー, Byū Torēdā): The "whiskers" of the DenKamen. They catch air vibration waves and convert them into electrical signals, allowing Den-O to hear wide range of sounds from 40Hz to 100,000Hz ultrasonic waves.
Dragon Gem (ドラゴンジェム, Doragon Jemu): The yellow hemispherical parts attached to the backside of the Bibless Plate (ビブレスプレート, Biburesu Purēto). Free energy is concentrated and converted into lightning, which can be discharged.
Warship Plate (ワーシップレート, Wāshippurēto): The chestplate attached over Sword Form's Bibreast Plate (ビブレストプレート, Biburesuto Purēto). It is made out of Aura Armor (オーラアーマー, Ōra Āmā), and can alleviate 10 tons of impact.
Dragon Storm (ドラゴンストーム, Doragon Sutōmu): A part equipped on the Warship Plate. It can summon black clouds and stir up storms.
Den Rail (デンレール, Den Rēru): A rail-shaped mold that runs vertically on the chest. It has the same shape as the rails on Den-O’s head, and is used as a track for whenever the DenKamen moves.
Aura Skin (オーラスキン, Ōra Sukin): The bodysuit. It can be considered Den-O’s ‘skin’, and an aura covers it. It has excellent defensive capabilities and reduce currents of 500 volts as well as mage caused by diamond-hard cutting edges.
Den Gauntlets (デンガントレット, Den Gantoretto): The forearm armor that stretches to the back of the hands. They are a type of Aura Armor that allows Den-O to withstand shocks from executing special attacks.
Wrist Bangles (リストバングル, Risuto Banguru): Silver bracelets around the wrists. They enhance the energy dissipation effect of the mind and body, improving the secretion of adrenaline, therefore improving athletic ability and as a result improves punching force.
Den Cuisses (デンキュイス, Den Kyuisu): The thigh armor. They discolor depending on Den-O’s form. In Gun Form, they take on a purple coloration.
Den Poleyns (デンポレイン, Den Porein): The knee armor. Increases destructive power of knee kicks.
Den Greaves (デングリーブ, Den Gurību): The shin armor. They are a type of Aura Armor that protects the shins from any attack.
Ankle Bangles (アンクルバングル, Ankuru Banguru): Silver anklets around the ankles. They have the same effect as the Wrist Bangles.
Den Sabotons (デンサバトン, Den Sabaton): The feet. They are a type of Aura Armor that protects the insteps.

Gun Form's ending theme is entitled "Double-Action Gun form".

Appearances: Den-O Episodes 13-17, 21-22, 26-27, I'm Born!, 31-32, 37, 44, 49, , , Episode Blue: The Dispatched Imagin is Newtral, Episode Yellow: Treasure de End Pirates, Kamen Rider Heisei Generations Forever

Wing Form

"Wing Form!"

―Transformation announcement^[src]

Rider Statistics^[12]

Rider Height: 193 cm.
Rider Weight: 90 kg.

Rider Senses^[12]

Eyesight: 5 km.
Enemy Sensor: 2 km.

Ability Parameters^[12]

Punching Power: 4 t.
Kicking Power: 8 t.
Resistance: 10 t.
Maximum Jump Height: 50 m.
Maximum Running Speed: 100 m. per 3.8 sec.

When possessing Ryotaro (or anyone else) or by himself, Sieg assumes Wing Form (ウイングフォーム, Uingu Fōmu) by placing the Wing Buckle (ウイングバックル, Uingu Bakkuru) over the Terminal Buckle.

Unlike the other forms, Wing Form has the DenGasher become two weapons: a boomerang and a hand axe. Wing Form's suit resembles Sword Form but the Aura Skin becomes gold, different shoulder blades and thicker thigh armor are used, and the visor is blue and resembling swan wings, the bird of the ballet Swan Lake, which Sieg is based after.

This form gives Den-O more mobility than Gun Form could provide via a fractionally faster running speed and a somewhat higher jumping height max, though Wing Form has lower offensive output.

Wing Form's Full Charge finisher is the Royal Smash (ロイヤルスマッシュ, Roiyaru Sumasshu).

Wing Form is composed of the following parts:^[13]

DenKamen (電仮面, Den Kamen, lit. ‘Electric Mask’): The blue overall wing-like mask. It is a mask dedicated to Wing Form. This allows for both vision and hearing.
Wing Scan Eye (ウイングスキャンアイ, Uingu Sukyan Ai): The eyes. It can see in a wide angle within a wide range. It can distinguish human faces up to 5km away and objects as close as 0.05mm. It also has a night vision function, allowing Den-O to see targets up to 1km away in the dark thanks to infrared irradiation.
Wing Reader (ウイングリーダー, Uingu Rīdā): The antennae at the tip of the Wing Scan Eye. They catch air vibration waves and convert them into electrical signals, allowing Den-O to hear wide range of sounds from 40Hz to 100,000Hz ultrasonic waves.
O Signal (Oシグナル, O Shigunaru): The red sensor on the forehead. Allows Den-O to detect Imagin within a range of 2km.
Bibreast Plate (ビブレストプレート, Biburesuto Purēto): The chestplate, that is similar to Sword Form's chestplate, and is white in color, instead of red. It is made out of Aura Armor (オーラアーマー, Ōra Āmā), and can alleviate 10 tons of impact.
Den Rail (デンレール, Den Rēru): A rail-shaped mold that runs vertically on the chest. It has the same shape as the rails on Den-O’s head, and is used as a track for whenever the DenKamen moves.
Aura Skin (オーラスキン, Ōra Sukin): The bodysuit, that changes into a golden color, exclusive to Wing Form. It can be considered Den-O’s ‘skin’, and an aura covers it. It has excellent defensive capabilities and reduce currents of 500 volts as well as mage caused by diamond-hard cutting edges.
Den Gauntlets (デンガントレット, Den Gantoretto): The forearm armor that stretches to the back of the hands. They are a type of Aura Armor that allows Den-O to withstand shocks from executing special attacks.
Wrist Bangles (リストバングル, Risuto Banguru): Silver bracelets around the wrists. They enhance the energy dissipation effect of the mind and body, improving the secretion of adrenaline, therefore improving athletic ability and as a result improves punching force.
Den Cuisses (デンキュイス, Den Kyuisu): The thigh armor. They discolor depending on Den-O’s form. In Wing Form, they take on a silver coloration, with the surrounding area being white.
Den Poleyns (デンポレイン, Den Porein): The knee armor. Increases destructive power of knee kicks.
Den Greaves (デングリーブ, Den Gurību): The shin armor. They are a type of Aura Armor that protects the shins from any attack.
Ankle Bangles (アンクルバングル, Ankuru Banguru): Silver anklets around the ankles. They have the same effect as the Wrist Bangles.
Den Sabotons (デンサバトン, Den Sabaton): The feet. They are a type of Aura Armor that protects the insteps.

Wing Form's ending theme is entitled "Double-Action Wing form".

Appearances: Den-O Episode 24, 27, I'm Born,