You have to buy the plush toy yourself and find out.
You buy a plush toy then you unlock it.
go buy some at Toy's R Us.
online go to toy wiz you have to pay with credit card.
I found the plush at both Amazon and ToyWiz.com. Do a google search and you will find them.
in line 3
London Hamley's
You buy them at places like Target.
if you buy a clubpenguin plush toy it comes with a code so u can acess things from the toy like the ballet plush toy u acess the tutu... here is a code for the blue puffle (G8PWLKVGQ)
You can purchase a Mario Plushie at any Toys-R-Us.
Disneyland
Toys"R"Us