The code for the Shakesfear Bust is: bardbrain
You can't.
There is no secret code for the Egyptian Cat Statue. You can buy the statue at Horrod's, but you have to be a paid Moshi Member.
The key is in the skull's head.
Liberty the happy statue
the sulls head is in the unground
shacanaca
Pip the Savvy Sapling is a moshling on Moshi Monsters that has half a coconut on his head.
in the skull head
The code for the Robot Head on Moshi Monsters has expired. The codes for the robot parts for the Build-A-Robot competition were only good for one day. If you are a paid Moshi Member, you can buy the robot head at Horrod's.
the pass word is under ware add me dragonmoon500
Head over to the Moshi Monsters website and click on the Sign in button located in the adopt a monster button in the top right hand corner.
I am not a member, and I got Stanley and this Statue Of Liberty one. The maximum amount of moshings is two, if you are not a member.