Izuku was never born, he was created and programmed, as well as others that were created to hide his identity and theirs as well by them acting "normal".

The first and most successful project was him, I-M-1, otherwise known as Izuku Midoriya. The others had similar names, except with a different number by their initials given to them.

And although they were all programmed to act normal, they did have their own free will, to a certain extent. And though they had free will and acted normal, they were put into grades and Izuku was the highest grade out of them all. The Grades were Common, Uncommon, Rare, Super Rare, Legendary, Ultra, Ultimate, Supreme, and Origin. And Izuku was the only Origin of his group.
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Hive Mind
Hacking
Hacker Protagonist