Atlus have released the Japanese cover art for Persona 4: Arena on the Xbox 360 and PlayStation 3. Instead of focusing on the returning cast, it features the protagonist from Persona 4, and Labrys, one of the new characters who also happens to be a mech like Aigis. Here it is:
Persona 4: Arena takes place after the events of Persona 4. Yosuke, who’s now a high school senior, hears rumours of the Midnight Channel starting to air once more, and ventures into the TV world, where he meets Labrys. Somehow, Labrys is also part of the Student Council at school.