Oze Rintarou, also known as America Ou (King of America) is the main antagonist of the series. He is a hacker of great ability, yet not as good as BPS or Yoriko. His daytime job is with Eibin Electronics, while he runs his illegal activities as the CEO of Kyaratech.

Battle Programmer Shirase, also known as BPS, is a free programmer with super hacking abilities who doesn't work for money. What he does work for is certainly something that only people like him would appreciate. But, his demeanor certainly doesn't suit the jobs he is hired for. With the evil King of America causing trouble via the internet, Shirase is nothing but busy as each new adventure brings even more interesting people into the picture.
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(Source: Anime News Network)
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Rintarou Ose