Medals are a new feature introduced in Pokémon Black 2 & White 2. These medals are given to you to commemorate various different accomplishments throughout the game. These accomplishments vary in the means to obtain them, from catching Pokémon to doing specific tasks.

To receive the medals, you just need to speak to the Medal Master who sits in each of the Pokémon Centres. If he has any medals to give you, you will receive them all in one go.

A unique part of the medals is that, as you collect more of them, you will get given a new rank at the Medal HQ in Castelia City. You start with the Beginner Rank and continue to rank up from there. A list of all the ranks shall be provided.

Finally, another feature of the medals is to pin one to your trainer card. If you're proud of succeeding in one of the accomplishments, you will be able to post it there to allow for others to see the medal you achieved, how you achieved it and when you achieved it. This not only shows on your trainer card, but on your Pokémon Global Link Profile as well.