Hajime Aikawa/Zi-O

In 2004, Hajime Aikawa (相川 始) was Kamen Rider Chalice (仮面ライダーカリス).

Blade Joker!? 2019
In the second battle between Sougo Tokiwa/Kamen Rider Zi-O and Amane Kurihara/Another Blade, Hajime suddenly appeared from nowhere, to the latter's surprise. Telling Sougo to stay away from Amane, Hajime transformed into Kamen Rider Chalice and began fighting him. Though Chalice was overwhelming Zi-O in their battle, he stopped for a moment upon sensing a familiar presence. Kazuma Kenzaki had reappeared in front of him. Angrily asking Hajime why he had used his Undead powers, Kenzaki transformed into Kamen Rider Blade. In a seemingly uncontrollable fit of rage, Kenzaki viciously attacked Chalice, despite his pleas to stop. The battle was evenly matched, with both sides showing no signs of giving up.

2019: Trinity Has Begun!
After that, Hajime escapes to his home, with Amane following him. Amane asks about Hajime's whereabout in these 14 years, and they converse for a while before suddenly Kenzaki appears and forces him to fight. They transforms and fight savagely until Amane, who is transformed again by White Woz to become Another Blade, intercepts them. Another Blade proves too strong for both Blade and Chalice, and she absorbs their Joker power. As a result, Kenzaki and Hajime become normal humans, and Another Blade becomes Joker, therefore winning the Battle Fight. They look horrified when the new Joker summons the Stone of Sealing with infinite number of Black Jokers inside to kill all living beings on Earth. But, Sougo Tokiwa appears and using the Trinity Ridewatch, he fused with Woz and Geiz, becoming Zi-O Trinity that manages to destroy Another Blade, and destroying the Stone of Sealing, saving the world. In the end, Hajime reconciles with both Kenzaki and Amane, his fate to fight Kenzaki endlessly as Joker is ended.

Equipment

 * Chalice Rouzer: Chalice's transformation device
 * Rouze Cards: Allow Chalice to transform into Undead or perform special attacks
 * Chalice Arrow: Chalice's personal weapon
 * Wild Slasher: Wild Chalice's primary weapon
 * Shadow Chaser: Chalice's Rider Machine

Portrayal
Hajime Aikawa is portrayed by Ryōji Morimoto (森本 亮治). As Kamen Rider Chalice, his suit actor was Masashi Takada (高田 将司).

Appearances

 * Icon-zi-o.png Kamen Rider Zi-O
 * Episode 29: Blade Joker!? 2019
 * Episode 30: 2019: Trinity Has Begun!
 * Episode 37: 2006: Next Level Kabuto