You can enter the passwords indicated below to unlock the corresponding playable toys in-game.

94283937 - Bulbasaur
68110948 - Charizard
91698319 - Dragonite
93173657 - Hydreigon
23906908 - Oshawott
72679922 - Piplup
04417308 - Rotom
80889856 - Samurott
07461322 - Serperior
43265987 - Snorlax
02337796 - Stunfisk
65501535 - Whimsicott