101

101 is the main antagonist of Pretty Cure 1.5. 101 would usually get people's private information by making them install the "Rogue Suite" Antivirus app. He's also stealing the user's soul. He could possess the user and turn them into a Corruption, most commonly using them as Trojan horses. Considered the worst out of the five bad guys because of gaslighting.

Backstory
I don't think he has one, but if I had to, I'd say that he was a virus made by two Russian trolls and he got a mind of its own because he loved being evil.

Trivia

 * 101 is the anime equivalent of scareware.