Zero

Zero is the main protagonist of Rider Zero-One: Prologue and potentially Kamen Rider: Fake

Biography
Zero is described as a mechanized cyberframe, essentially a cyborg, that resides within the year of 2021. His main role within the series is to assist the hacker, Mayumi/One, to track down any nearby Shells within cyberspace and destroy them, preventing them from causing a huge disruption in the real world.

Rider Zero-One: Prologue
At an unspecified point in time, Zero was once a human. However, due to unknown circumstances, his body was in need of medical aid. He would soon be found by Mayumi, who would patch him up, giving him a copy of her own mind. Ever since he was saved, he has no recollection of his past life as a human.

Personality
Zero is a curious individual who observes and analyzes the things around him. One of the most prevalent things he analyzes are the many facets of the human mind. Many examples include why humans harm one another, what causes conflict, etc. To satisfy his curiosity, he usually asks Mayumi questions. According to himself, Mayumi is one of the most intelligent humans he has ever met.

Despite being half machine, Zero has demonstrated traits of compassion, optimism, and courage. He always expresses worry when Mayumi coughs during their hunts for Shells, advising her to take her medication. There has been a few times when Zero had found himself in conflict with his operator. In times like this, he questions the other if an argument has started or apologizes for not understanding her words, according to his own analysis in Episode 02. Other times, like in Episode 03, he becomes clueless and confused as to why his operator had gone offline in a rage.

During the last two episodes, despite being injured, he refuses to back down from battle as just like any other hero, he cares for the lives of the many.

Powers and Abilities

 * Cyclone Belt: Using the Cyclone Belt, Zero can achieve a form similar to both a Shell and Kamen Rider Ichigo, which grants him superhuman speed and strength.

Trivia
To be added...