Those of us from Chasm started calling it the Visitor because that's a relatively comfortable label. It implies the stay is temporary, the the thing will go away. We think the Visitor must be part of a race of beings who live in space, though we're guessing at that. We also postulate that they hitch rides on bits of space trash that are moving somewhere, like the one that came at us. Anyhow, the Visitor is getting closer by the day.

Ch. 37 : leaving bastion - The Visitor (2002)