I think Freddi and Sophine are offical housemates
 

I know its not that reliable but it said it on wickapaida

Sophie & Freddy are official because they had their names changed.

Imagine you were a contestant in the Big Brother House. No, really – you're going to love this. Just how far would you go to ensure your status as a housemate?


Would you shave off your eyebrows? Or maybe walk across broken glass? Perhaps you'd allow yourself to believe someone was riding a motocross bike over you? Or how about changing your name – legally, by deed poll – to, say, Dogface, or Halfwit? Because that's just what Sophie and Freddie did – or as we should now call them, Dogface and Halfwit.

I think you can only legally change your surname by deed poll