These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Complete Monster: John Dread is a rapist, Serial Killer, Psycho for HireMisanthrope Supreme who was raised by his drug-addled prostitute mother for the precise purpose of being a weapon against the society she wanted revenge on. The psychiatrist who treated him as a child notes that he was the scariest human being he'd ever seen. Felix Jongleur employs him as an attack dog, setting him loose on the Brotherhood's enemies and otherwise letting him indulge himself, as long as he doesn't draw too much attention.
Growing the Beard: The first book, before the characters really get into Otherland, reads like something of a Justified Tutorial. It's very clear that the series is written as a coherent whole, rather than four separate novels, and the plot doesn't get into full gear until the second book.
Ho Yay: Finney and Mudd have a very close relationship.
Iron Woobie: Paul Jonas. The man spent eternity in the trenches of world war one and things got worse when he escaped. And he just kept going, and going, and going.
So very much. If it involves John Dread, it's going to be fairly horrible, particularly when he gets godlike power.
The Other inspires nightmares in its power and inhumanity, let alone the entirety of its very existence.
Trapped by Mountain Lions: Okay, yes, technically every one of the massive number of plot threads matters in the end, but there are so, so many...
True Neutral: Kunohara remains resolutely neutral in the conflict between the heroes and the Brotherhood, reasoning that he sees no value in helping them considering how easily it could jeopardize his position...