Reblogged from pokemon-xy-news
A thing that has been in question for a while since the launch of the game has been confirmed. In the status screen for Pokémon, and seen in trades and in the box, you may have noticed a blue pentagon next to your Pokémon. The meaning of this had yet to be determined, but has been revealed today. This pentagon is essentially a hack check confirmation. If your Pokémon has this, it confirms it was obtained legitimately in-game or through event. If not, then it has an error and has been hacked. via Serebii
Serebii just updated….
Edit @ 16:01: The literal definition of this pentagon, given by the Pokémon Company, is that the Pokémon is ok to use. This came from the rules of the upcoming Dragon tournament in Japan where, on looking deeper into the fine print, it is stated that Pokémon that were transferred from Black, White, Black 2 & White 2 cannot be used. There is a possibility that the mark could be for Pokémon obtained natively in the Kalos region, with other marks for Pokémon transferred, but this will not be made clear until December 25th when Pokémon Bank is released