Deathstroke will likely be fighting off some angry locals and possibly some Darkness monsters. Eventually, he will probably brave the Nexus and make it back to his own world.
Xigbar will be fighting alongside AGI for a bit before going turncoat and facilitating the chaos in the city by unleashing Nobodies, Heartless, and some of the large nasties he created in October. The world is falling to Darkness, and he's perfectly happy to help it along the way. He will also being leaving through the Nexus (unless something else comes up).
Aslan will be protecting those he can, possibly shepherding some of his bitties through the Nexus so they can make it somewhere safe. He will be going back through the Nexus right before it closes and returning to Narnia.
RW's characters
Xigbar will be fighting alongside AGI for a bit before going turncoat and facilitating the chaos in the city by unleashing Nobodies, Heartless, and some of the large nasties he created in October. The world is falling to Darkness, and he's perfectly happy to help it along the way. He will also being leaving through the Nexus (unless something else comes up).
Aslan will be protecting those he can, possibly shepherding some of his bitties through the Nexus so they can make it somewhere safe. He will be going back through the Nexus right before it closes and returning to Narnia.