Using the serial code “HAPPY” you are currently able to retrieve a Meowth with the event-exclusive move “Happy Hour”. It is only currently available for PAL region games of Pokémon X, Y, Omega Ruby & Alpha Sapphire. The end date of the distribution is currently unknown as the distribution has not yet been officially announced neither has it been officially promoted.
The level 20 Meowth has the moves of Happy Hour, Screech, Bite and Fake Out with the Ability “Pickup. The Meowth has no held item with the Trainer ID number of 08196 and the original Trainer it belonged to is “Happy”.