The way the arbiter was talking makes me think it has a connection to MC and not the apostles specifically. If the eye was "evolution" (combo of body + memory) then him talking about how everything was better when there was "nothing" or "only him" (when he gets sent to space) or whatever doesnt really make sense? You would think "evolution" would want things to evolve past just them? Which kinda tracks with body/memory being willing to do a 50/50 split unlike the other apostlesElla has some idea that something is going to possess or fuse with the MC, but I don't think she knows about the Eye specifically. Early in the game, right before she fights Clark and Lexi, the narration describes her inner monologue musing about her plans. Apparently she's looking for a host body for some entity to occupy, and is sad to think that the MC is the probably the best bet for that. But she doesn't appear to have any awareness of what exactly that entity is. She seems to think that potentially it could find a host in any strong enough superhuman, regardless of their monster parentage. The Eye, as far as we know, has a particular connection to the MC and the Third and Fourth Apostles. Which makes the Eye even more mysterious and terrifying, to me. It's convinced Ella that she should work towards its arrival, but without actually telling her anything about what it is.
I was thinking about that and i feel like the arbiter would have realized if they being attacked there? also deus vanishes (iirc?) but when he attacks the tv head from real world he just fires some lasers lol. Perhaps some sort of combination of "time travel" and the immaterial ? Or maybe deus is playing 4000d chess and was lying to MC during his training dream for....deus reasonsWait, I just thought of it now but if the Arbiter gets his "infinite mass" from the immaterial world and Deus can actually interact with it then isn't it possible for him to attack him at his origin? That would also explain why the limbs "were never there"