[Eclipyon]

Some character summaries as well as info for Zeztz's first quarter power-up provided by Color809 as well as another Tieba user (contains spoilers):

Baku Yorozu
An optimistic young man cursed with bad luck. Lives with his younger sister Minami, who is the sole breadwinner of the family, as Baku's poor luck has prevented him from finding a job. One day while job searching, Baku falls into a coma after saving a kid from an oncoming car (an event caused by creatures called Nightmares). While comatose, Baku finds himself inside the dream world dressed as an agent (his personal interest are things related to spies). After encountering 0, a transformable motorcycle who is also the leader of the secret organization "Code", Baku is recruited into the organization as Agent No. 7 and transforms into Kamen Rider Zeztz. After working together with 0 to defeat the Nightmare responsible for his coma, Baku miraculously wakes up as the Zeztz Driver also materializes into the real world. Baku's awakening from his coma has also caught the attention of police investigators Tetsuya and Nasuka.

Nemu
A famous actress/idol who, like Baku, has the ability to enter the dream world. Can freely switches her clothing while in the dream world, where she usually meets and interacts with Baku.

Nox
Baku's rival. Responsible for guiding the Nightmares into the real world. Will eventually transform into Kamen Rider Yezz, the secondary Rider of the show. Apparently is a former cop.

Tetsuya
A hot blooded police investigator very dedicated to his job.

Nasuka
An elite police investigator who is very serious.

Minami Yorozu
Baku's reliable younger sister.

Zeztz's 1st Quarter power-up will be called Inazuma Plasma, which is gold and gunmetal silver in color.