The meaning of the loadscreen...

[Childerich]

I think each one of those means a parallel universe, the one under Neptune maybe that old dudes home place, where he wants to get back too

I think he was banished from that realm cause he's so evil

I think you're right, I was going to write that, too, but I wasn't sure if it counts as a spoiler and - shame on me - I don't know how to make spoiler tags.