.PK6 File Extension
File TypeGeneration 6 Pokémon Save File
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
What is a PK6 file?
Pokémon save file used by 6th generation Pokémon games for the Nintendo 3DS platform, such as Pokémon X and Pokémon Y; contains information about a Pokémon, including the species, EXP, abilities, attacks, and current owner.
PK6 files can be opened, edited, and created in Windows using the PKHeX utility, which is a Generation 6 equivalent of PokeGen. You can also generate .PKX files through PKHeX by creating a PK6 file and renaming the extension to "pkx."
[Pokémon name].pk6 - Each PK6 file will be named after the Pokémon that it contains information for.