This badge set includes includes Kurome(???),  Akame(???), Ryuko(????), Yuno(??), Mikasa(???), Yukiteru(aka Yukki)(??), Mine(???) and Eren(???).

Along with granting you access to the badges, you can also grant access to these badges to any players. They wouldn't be able to give it to others unless they also bought this badge group.