I didn't even realize there were other Persona users until I came here actually. Not that I didn't think it was possible, but still.

[ And top of that, they all got theirs differently. Who knew? ]

I see...I was the only one who could see and enter the Room. I could also use any Persona I had access to well enough, but my starting Persona, Izanagi, was of the Fool Arcana, and I always kept him around.