In the Persona series only someone with the power of the Wild Card can switch Persona's, which was unique to the protagonists in previous instalments. In Persona Q however, everyone can use other Personas.
Persona's equipped by other characters level up and learn new skills just like in other Persona games, but this new system allows characters, like Kanji for example - to be able to utilise Persona's based around magic instead of just physical attacks like he was limited to in Persona 4. How this effects the overall flow of the game is still to be seen, but it could lend itself to a more shrewd & strategic game. Check out the trailer above for a glimpse.
Persona Q: Shadow of the Labyrinth is due on 3DS in Japan on June 5th, US in the fall.