Harsher in Hindsight: The subplot about the Newsboy Army shows how the original team fell apart after Captain 7 raped Chop Suzi and she died in childbirth, which led to the rest of the group murdering Cap in revenge. Recently, Cameron Stewart, the artist who worked on Manhattan Guardian was outed as a sexual predator who liked to groom young women. Knowing Stewart's a predator who worked on a story about a young woman dying after giving birth to her rapist's babies makes the story even more uncomfortable to read.
Big-Lipped Alligator Moment: Kakarot and Raditz briefly talk about their parents, and the conversation makes it out as though their mother might possibly be alive, giving a foreshadowing that either she'd appear or they'd go look for her... but it never goes anywhere nor is it mentioned again. The author has acknowledged this though.
Crack Pairing: Yamcha lampshades this when he finds out Nam and Ranfan are married with a child.
Cry for the Devil: It's hard not to feel some measure of sympathy for both Chiaotzu and Cell.