We know from Phantasy Star I and Phantasy Star Online that the Dark Falzs gains power by possessing people. Do you think this would also be true for the other Dark Forces? That is to say, did the PSII, PSIII, and PSIV Dark Forces actually take possession of someone's body as Dark Falz did?
Rika mentions that Alys seems like she was possessed by an evil power after the Zio encounter. Could this be similar?