Answer: Hatsune Miku, the crazy-haired teenage digital diva from the voice synthesizer app Vocaloid, that's who! And to celebrate the 4th anniversary of this android angel's creation, Japanese builder chaosbrick (カオス煉我) has recreated her in Lego. And judging by the pretty comprehensive job that he's done, I'm guessing he's a "bit of a fan"!
And if you haven't seen her in action, take a look at this piece of wierdness. We're living in the future, people!