From Bulbanews, your community Pokémon newspaper.
Password to unlock last Generation V Pokémon revealed
Japanese players of Pokédex 3D Pro can now unlock Genesect with the password QUHDPHEU. Genesect is the last Pokémon to be made available for the game, meaning that all Generation V and earlier Pokémon are now accessible to Japanese players in the game. International players do not currently have access to Meloetta or Genesect on the 3DS version, although the Japanese Meloetta password works on the international iOS version.
To unlock Genesect, the player must create a quiz in quiz slots 37-39, with the password of QUHDPHEU, and complete the quiz.