Yeah! That's the kinda reply I was hoping for!
The part about Hanuš being Jakub's unpleasant-side also ties in with how he's projected; namely as a big, dark spider.
One of the things that stuck most with me, is how fast humans tend to judge and terminate other beings (remember, Jakub's first move was to turn the ship into a giant gas chamber).
But also, how fast humans can bond with others; remember that Jakub literally risked / sacrificed his life simply to be with Hanuš during his last moments?
I'd really adore a friend like Hanuš...