- Meaningful Release Date: Episode 14, which focuses on Elena's Mexican-Japanese family, premiered on Cinco de Mayo.
- Name's the Same: The City of Adventure may not have been named after the infamously ditzy Galaxy Police officer, but it does share the same name of a town in the Okayama Prefecture in real life Japan.
- Relationship Voice Actor:
- Spoiled by the Merchandise:
- Because of the Star Color Pens being misread if they are put in too fast or too slow, the Star Color Pendant and Twinkle Book will sometimes recognize Cure Milky's pen as being Cure Cosmo's pen.
- Another misreading shows a new pegasus fairy that resembles Fuwa.
- When turned on, the Star Color Pendant flashes in five colors: pink, green, yellow, purple and blue, with the last one being Cure Cosmo's theme color.
- Talking to Herself: In the series so far, four of the princesses have the same voice actress as a character in the series. As an added twist, said character usually has a role in the episode their respective Princess is rescued in.
- You Sound Familiar:
Trivia / Star★Twinkle Pretty Cure