Kamen Rider Zeronos

Kamen Rider Zeronos is the second Rider in the Kamen Rider Den-O series.

Kamen Rider Zeronos

仮面ライダー ゼロノス

Character Name: Sakurai Yuuto 桜井侑斗

Actor: Nakamura Yuuichi 中村優一 - (Young ver.) / Okano Tomonobu 岡野友信 - (Elder ver.)

(For easier distinction, the young ver. will be referred as Yuuto, while the elder ver. will be referred as Sakurai.)

Suit Actor: Ito Makoto 伊藤慎

Different Forms

Unlike Den-O who uses a Contactless Smart Card system to henshin, Zeronos uses a more traditional ticketing card system. Zeronos henshins into different forms by physically inserting different cards into the slot on the Rider Belt.

Each Zeronos card can only be used once, it evaporates every time Sakurai Yuuto cancels the transformation. The cards are made out of people's memories of Sakurai Yuuto. Every time Sakurai Yuuto henshins, people who once knew him will forget about him, meaning he is slowly erasing himself from the timeline. There are two sets of cards: the cards that are green on one side and yellow on the other, and the red cards. The green and yellow cards are made from the memories of the elder Sakurai. The reds cards are from the memories of the younger Yuuto, the memories he created after he boarded ZeroLiner and created a separate timeline from his older self.

All forms has the ZeroGasher hoisted on the belt. It is a two-pieces equipment that can be combined into the Sabre Mode or the Bowgun Mode.

Altair Form

Altair Form is Zeronos' agility form. Yuuto henshins by inserting the Green Card into the Zeronos Belt. The belt announces "Altair Form" when the card is inserted. Sakurai also fought in this form in the past.

• First appearance: Episode 20
• Imagin: None
• Armor: Mainly green and black with silver trimmings, the armor design is based on a bull. Two green bulls heads run on the helmet's railway pattern and transform into the visors.
• Weapon: Yuuto prefers the ZeroGasher Sabre Mode in combat, but uses Bowgun Mode for the finisher
• Finisher charge: Full Charge
• Finisher:

1. Press the button on top of the belt to charge up the Zeronos card
2. Pulls the card from the belt's slot and inserts it into the slot in the bowgun's handle
3. The card charges up the bowgun
4. When Zeronos aims and shoots, it shoots out a green "A" shaped energy blast

Vega Form

Vega Form is Zeronos' power form. Zeronos changes forms by pulling out the Green Card from the belt, flipping it over, and inserting the Yellow Card into the belt's slot. This will trigger Deneb to possess Zeronos. In Vega Form, Deneb is in charge of Zeronos instead of Yuuto. The belt announces "Vega Form" when the card is inserted.

• First appearance: Episode 20
• Imagin: Deneb
• Armor:
• Weapon:
• Finisher charge:
• Finisher:

Zero Form

Zero Form is Zeronos' final and most powerful form. Yuuto henshins by inserting the Red Card into the Zeronos Belt. The belt announces "Charge and Up" when the card is inserted.

• First appearance: Episode 40

Catchphrases

In Altair Form and Zero Form, Yuuto's catchphrase before the battle is:

• 最初に言っておく。 俺はかーなーり強い！
  

Let me say this to start. I am pretty strong!

In Vega Form, Deneb also starts with "Let me say this to start", but ends with different variations. Including:

• 最初に言っておく。 胸の顔は飾りだ！
  

Let me say this to start. The face on my chest is a decoration!

• 最初に言っておく。 特に言うことはない！
  

Let me say this to start. I have nothing to say!

ZeroLiner

Drill

ドリル

Naginata

ナギナタ

Motif

Zeronos' designs are based on the Japanese Tanabata Festival, which origiated from the Chinese Qi Xi festival and the folklore story, "The Princess and the Cowherd". It tells of the story of two deities, Niulang (Chinese: 牛郎, the cowherd) and Zhinü (Chinese: 织女, the weaver girl). They were lovers that were separated by the the galactic river, and were allowed to meet only once a year on the seventh day of the seventh month on the magpie bridge over river.

The story is inspired by the stars Altair, Vega and Deneb of The Summer Triangle, the the brightest stars in the three constellations of Aquila, Cygnus, and Lyra. The star Altair is located in the west of the Milky Way, while the Star Vega is located in the east. The Milky Way separates the two stars. Deneb marks the location of the bridge across the Milky Way that is formed on the seventh day of the seventh month.

Zeronos Altair Form's design is based on a bull (a cowherd), Vega Form's visor is a spool of thread (a weaver) and the Deneb Imagin's bird motif is based on a magpie. Other than being the namesake of Zeronos' different forms and his Imagin, the story also represents the Form changes, with the link between changing from Altair Form to Vega Form being the Deneb Imagin.

The story reflects the circumstances of Sakurai and his fiancee Nogami Airi, where they are in love but are not allow to meet.

Trivia

• The name Zeronos is derived from the title phrase of Episode 19 "That Man, Zero no Start" (その男、ゼロのスタート Sono Otoko, Zero no Sutāto), meaning "That man, Starts at Zero".