- Ho Yay: Klaus refuses to play along, but the author manages to smuggle some in regardless. Here is an essay (by Hunter) describing their relationship.
- Informed Wrongness - Dorian's mother. Dorian narrates a story of his early life in Midnight Collector, and while he doesn't badmouth his mum, he's much more sympathetic to his father, who was, like Dorian, a homosexual aristocrat. Unlike Dorian, however, he married and produced kids (although he strongly favoured his son over his three daughters). Despite Dorian's equanimity, the story pretty much portrays his mother as a shrieking shrew who abandoned her son...but what would most people do if they discovered their spouse was encouraging their son to thieve, neglecting their daughters and likely having affairs?
- They Wasted a Perfectly Good Character: Caesar Gabriel, Sugar Plum, and Leopard Solid. They're set up as major characters in the first volume (with Caesar even being set up as a second love interest to Dorian), but they don't appear again outside of it. A pity, as their abnormal abilities and attempts to clear their names could have set up some interesting plots...
YMMV / From Eroica with Love