Literally had these ideas of specific Coroika characters as guides in the afterlife. I feel little silly or "insane" for these concepts, but it makes sense to me.
Shady, Vintage and Omega are the prime candidates for my concepts, but I'd put in the entirety of X-Blood if I need to.
First thing I think about when it comes to guides, is their navigational skills; it's not obvious that those 3 characters have great navigational skills, but at least with Vintage and Omega, I'd immediately assume they do (it's a bit of a hc, since Skull has a bad sense of direction, I thought they'd be the opposite). I think the only way I can explain Shady having great navigational skills, is the fact that he's supposed to have a keen eye of his surroundings (as a hc tho, I think he runs a bit on photographic memory rather than using maps).
The next essential to being a guide in the afterlife, or a psychopomp, is being a spirit or deity of some sort. Canonically, none of the Coroika characters fit that criteria, they're all just mortal inklings or octolings. Vintage and Omega would probably reapers imo. As for Shady, I kinda associated him more with Anubis, though I'll be honest, he has a lot in common with Horus (from what I've connected together).
Kinda just wanted to post my thoughts here, idk I just find comfort in spirits or deities like reapers...