In Pokemon Omega Ruby & Alpha Sapphire, after the player clears the first Contest Spectacular,
the player can obtain a Cosplay Pikachu from a Pokemon Breeder in Slateport City Contest Hall.
While it can be traded via local or online trade,
it cannot be traded using Wonder Trade, Global Trade System, and cannot be deposited into Pokemon Bank.
(which means it cannot be transferred up to the later generations)
Format Ver.1.0.6-1, Post Updated Date:20180221_2145