About Masked Rider Chalice

A Wild Card Rider who is actually the infamous Black Joker Undead, the most powerful of the Undeads; the 53rd Existence. The Undead whose victory in the Battle Fight would mark the end of all life on Earth.
He became a Masked Rider by using the power of Chalice the Legendary Mantis Undead, a CA Undead and the most well known Undead due to his fighting abilities, and began using the human form after sealing the Heart Category 2 Human Undead. During a battle with the Giraffa Undead, an innocent bystander witnessed the battle and was accidentally killed in the skirmish. The photographer handed him a photograph of his family and Joker decide to protect his family in which he did to atone for his death. The Joker Undead adopted the name Hajime Aikawa, a free lance photographer, after this incident. He's been targeted by many Royal Type/High Class Undead because they deemed him the most dangerous of all Undead because his powers are capable of destroying the world. However, Hajime soon realized that the humans were good beings and wished for himself to be human instead of being the Joker due to his interest of human emotion. Despite being cold to many people, he holds a heart for the young girl and the widow of the photographer that died, Kurihara Haruka and Amane. Haruka sees him as a brother figure to Amane, while Amane sees him as a father figure and close friend. Later on, he developed a respect for the other riders as well, including Leangle; who continuously attempted to seal him. It's unfortunate that the only way the High Class Undead, as well as the other Riders, have to use underhanded tactics to defeat him. In the end, Masked Rider Blade is the only one to combat him head on because it seems that Blade is the only one who can equal him in power.
Hajime Aikawa draws his power from the Human Undead and Chalice to suppress the powers of the Joker and prevent him from destroying everything. According to Hajime, the Human Undead's compassion for life and the Mantis' Undead's fighting spirit is strong enough together to suppress the evil of the Joker's power. Besides turning into a Masked Rider, he can adopt the forms and powers of other undead by swiping cards in his Chalice Rouse. However, he's not as strong as his "Rider" form according to him. Over the series, he became the Dragonfly Undead and Wolf Undead, when his change card was stolen by Spade's Category King and Jack. And when he eventually gains all 13 of his category heart cards, Hajime is able to take full control of himself...that is until...Griffa Undead was sealed, he begins to lose control and his impulse as Joker comes forth with the Stone of Sealing creating his army of DarkRoaches to eliminate all humans.