WHO!!

[Jon Fawkes]

Toshiaki （とãâ€"あき） means "Anonymous" in Japanese. Futaba Channel is where the OS-tan originated.

Futaba Channel is a large board, kinda like 4chan.org (in fact, I think 4chan is the english version of Futaba Channel. Futaba channel is usually shortened to "2chan"). Users can post under the name "Anonymous"

So that's that.

[Aurora Borealis]

Actually Toshiaki doesn't mean anonymous but it is the name used for anonymous users

[zjhentohlauedy]

so anonymous people create great things for the world.... ;026

[diferensial]

I think that anonymous person doesn't work alone to make the OS-tan...
                                                   
He/she maybe make a group to make it

[Jon Fawkes]

Of course it was a group of people. They probably don't even know eachother. It's obvious from the different designs of each character

[infinity_zero]