Hajime Aikawa

Hajime Aikawa is a character from the tokusatsu TV series Kamen Rider Blade Hajime Aikawa, was played by Japanese actor/singer, Ryoji Morimoto.

TV Series
Hajime Aikawa (相川 始 Aikawa Hajime?) is a mysterious man who is the Joker Undead, the most feared of the Undead as his victory in the Battle Fight would mark the end of all life on Earth. Unsealed around the time the other Undead were released, Joker battled The Mantis Undead and uses the sealed Category Ace of Hearts (Change Mantis) to become the wild card Kamen Rider Chalice (仮面ライダーカリス). He later seals the Human Undead, who willingly surrendered to him without resistance, using the card to assume human form. The effect of prolonged use of both of these cards to assume their forms resulted with both the Human Undead's compassion for life and the Mantis' Undead's fighting spirit collectively suppressing Chalice's natural destructive impulse as the Joker.

However, many of the Royal Club Undead who knew his true identity made attempts to dispose of him. One such attempt by the Giraffa Undead ended with an innocent bystander named Shin Kurihara a.k.a. Amane's father witnessing the battle being mortally wounded by accident in the skirmish. The dying photographer handed him a photograph of his family and Joker decides to protect his family in which he did to atone for his death. The Joker took on the identity of freelance photographer Hajime Aikawa since then. Though he thought less of humans originally, Hajime's time in lives at Jacaranda Cafe with Kurihara's family warmed him up to humans and eventually, he wished for himself to be human instead of being the Joker.

Though he and Kenzaki disliked each other earlier, Hajime's growing humanity eventually warms up to Kenzaki, who becomes a dear friend of his, then Garren and later to a limited extent, Mutsuki as well. But when the Caucasus Undead takes most of his cards, the sealed Mantis Undead among them, it causes Hajime to regress back into the Joker after attempting to resist until Leangle unseals Hajime's cards and use the Undead against him. Even after managing to reseal them all, the Joker failed to regain control and goes on a rampage until he is provided with the Evolution Paradoxa, allowing Hajime to finally have full control of himself. This allows him to even assume Joker form, which he previously avoided to the best of his abilities, without losing control. This lasted until Giriffa Undead was sealed, with Hajime losing control and his impulse as Joker brings forth with the Stone of Sealing creating his army of DarkRoaches to eliminate all humans.

In the end, Kenzaki is the only one to fight him head on, with Hajime pleading Kenzaki to defeat and seal him. However, Kenzaki himself mutates into Navy Joker through the excessive use of King Form transformation in order to save Hajime and made his victory null, continuing the fight, retracting all unleashed DarkRoaches and prolonging destruction indefinitely. This effectively renders them rivals by instinct and they can never see each other again, or they would be forced to fight to the death for dominance the next time they meet. Moments after the battle, Hajime lives with the Kurihara family and was allowed to keep his Spirit Card to maintain the human disguise.

Missing Ace
The Missing Ace movie provides an alternate ending to the fight that has him sealed by Blade. However, the actions of the Albino Joker four years later forced Kenzaki to have Leangle unseal Hajime to aid in protecting Amane as his true self and later as Chalice. In the end, Hajime sacrificed himself by switching places with Amane to save her and give the other Riders an advantage over their enemy. His spirit was later shown watching over Amane, the girl assured by Kenzaki that Hajime will always be there.

OOO, Den-O, All Riders: Let's Go Kamen Riders
Hajime Aikawa returned as Kamen Rider Chalice, making a brief cameo appearance in the film, teaming up with Sakuya Tachibana and Mutsuki Kamijou, as well as the rest of the Kamen Riders.

Kamen Rider Chalice was part of a group of reinforcement riders led by Akira Date/Kamen Rider Birth to aid the primary riders in defeating the Rock Great Leader. All the Kamen Riders got on their bikes and performed the All Rider Break attack which destroyed the Great Leader.

Kamen Rider Battride Wars
Joker Undead appears as a boss in the video game Kamen Rider Battride Wars.

Chalice Rouzer
The Chalice Rouzer is a unique transformation device bestowed upon the Joker Undead. The full extent of its power is unknown, but the Chalice Rouzer is capable of reproducing the DNA of sealed Undead and mimic their forms with frightening accuracy, as well as their respective powers and abilities. Further adding to its uniqueness, is that the Chalice Rouzer utilizes the "Swipe" function, which became the template for the Rider System's "Rouzer" technology.

This Rouzer can be removed from the belt used as a "brass knuckle" sort of weapon to enhances punches or be inserted into the Chalice Arrow to use it to scan Rouze Cards without transforming into the Undead.

Chalice Arrow
The Chalice Arrow is Chalice's weapon and Rouzer, and functions as a multipurpose weapon. Simply put, it is composed of a bow with the curved ends of the bow as sharp as blades. This weapon is capable of shooting projectiles, as well as engage opponents up close using the bladed ends of the bow. The bow can also fold up, turning the Rouzer into a brass knuckle for stronger punches. By inserting the Chalice Rouzer into the bow, the Arrow can serve as the Rouzer for Chalice, activating Rouze cards without turning Chalice into an Undead.

Wild Slasher
The Wild Slasher is a peripheral weapon attached to the Chalice Arrow when Chalice assumes Wild Form. Two of these are carried by Wild Chalice. A Wild Slasher is a crescent moon dagger which has only half of the dagger as a blade. These daggers are wielded like sickles.

Shadow Chaser
The Shadow Chaser (シェドチェサ Shedo Chesa?) is Chalice's personal motorbike. Normally in the form of a normal (Honda XR250) motorbike, only upon transformations does the Shadow Chaser appear. The Shadow Chaser served as the basis for the BOARD Rider bike technology, which enables the Rider to augment certain aspects of the bike's performance with Rouse Cards.

Performance Modes
This performance mode is activated with the use of the ♥6: "Tornado Hawk" card. Once 'roused', the Shadow Chaser generates a high-gale wind barrier which properly defends against offending enemies.
 * Tornado Chaser
 * Cards Required: Tornado Hawk (♥6)

Rouse Combos
Spinning Wave Chalice's signature card combo; The combo enables Chalice's signature spinning chop attack, coupling ♥3's "CHOP" effect imbued with the wind-attribute of the ♥6's "TORNADO" effect.
 * Cards Required: Chop Head (♥3) + Tornado Hawk (♥6)

Spinning Attack The combo enables Chalice's spinning corkscrew kick, coupling ♥5's "DRILL" effect imbued with the wind-attribute of the ♥6's "TORNADO" effect.
 * Cards Required: Drill Shell (♥5) + Tornado Hawk (♥6)

Spinning Dance This card combo enhances the "Spinning Attack" combo with the addition of ♥4's "FLOAT" effect.
 * Cards Required: Float Dragonfly (♥4) + Drill Shell (♥5) + Tornado Hawk (♥6)

Bio-Chop Combo The combo allows Chalice to tie up his opponent with a vine, pulling them to him and chopping them. First used against the Centipede Undead. (Note: When Chalice rouzes his "BIO" card on the Chalice Rouzer, it was announced as "VINE")
 * Cards Required: Chop Head (♥3) + Bio Plant (♥7)

Wild Cyclone Chalice's signature card combo while in Wild Chalice; enabling Chalice fire a high intensity beam from the Wild Rouzer. It can also be used to power up the Wild Rouzer for a powerful slash.
 * Cards Required: Wild Card

Trivia

 * The name "Chalice" comes from the Minor Arcana version of the Suit of Hearts: the Suit of Cups which symbolize the emotion and love that Hajime acquired over the series.
 * He is the only Rider in Blade that doesn't need a Rouze Absorber to use an upgrade form.