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.
Also, Yuko's dad. Never shown on-panel, only known for his hilarious speeches made in severe black text.
Squick: The potato (which was actually a moldy kiwi.)
From the short stories:
Angst? What Angst?: Cecilia is at most a bit surprised when Death gives her a skeleton-hand. She says it's quite a conversation piece. Her reaction is similar to the events of the ghost mice story.
Arc Fatigue: Lucky Penny is a long-form graphic novel that only updates at the same two-pages-per-week schedule as the auto-bio comics and is over 100 pages long. And it's hard to tell where this is actually going.