- Big-Lipped Alligator Moment: When Celestia is summoned to Castle Discord, she walks in on a teenage unicorn mare and pegasus mare making out, who immediately run out the door when they see her. The incident is never mentioned again. Probably intentional, considering it's Discord.
- Fridge Horror: Pupa's mental retardation means that she will probably never advance beyond the mental age of a child. She is expected to marry her cousin Morphin (who is mentally normal) when she grows up, in order to continue her family's bloodline. This raises several disturbing questions:
- One, it is very unlikely that an adult Pupa would even have the ability to understand the concept of sex, much less consent to it. If Pupa can't consent to sex, but the Roachanov bloodline has to continue with her no matter what, will Morphin be pressured by his family into impregnating her anyway "for the future of the Roachanov dynasty"?
- Two, with other members of the Roachanov royal family having similar inbreeding-related defects, it is very likely that there have been previous family members, and possibly even other royal heirs, who also suffered from mental retardation. Have any of them been pressured, coerced, or outright forced into having sex with whatever partner their family chooses for them in order to continue the bloodline?
- Three, how high is the likelihood that a child of two closely related individuals (assuming Pupa can even carry a pregnancy to term), one mentally impaired and both severely deformed from centuries of inbreeding, would themselves inherit their parents' defects? (Let's just say "very".)
- Genius Bonus: The Changelings frequently reference a Grim Reaper-like figure called the White Changeling of Death. In most Asian cultures, the color white represents death and mourning.
- Hilarious in Hindsight: Thorax is here the name of Chrysalis' abusive father. In canon, Thorax is the name of an absolute sweetheart who could be considered Chrysalis' son.
- Jerkass Woobie: Queen Chrysalis becomes this after chapter 5.
- Moe: Princess Pupa.
- Ugly Cute: Pupa's deformities don't make her any less adorable.
- Uncanny Valley: Anychangeling can tell Prince Morphin is a mean piece of work just by looking at him.
- The Woobie: Princess Pupa.
YMMV / Maternal Instinct (MLP)