Actor Allusion: In the Italian dub, Cure Pine's voice actress, Benedetta Ponticelli, does the Italian voice of Fluttershy (and Applejack too). Both Fluttershy and Inori are shy, kind, soft spoken, and love animals. They also have yellow color schemes.
Space Miki-tan, for her appearance in The Movie, wearing a futuristic space patrol leotard.
Nozomirara: Love (Cure Peach). This nickname is a portmanteau of Nozomi and Urara, both from Yes! Pretty Cure 5 as well, and it was earned because of Love's resemblance to both. Didn't last long either.
Secchin: Setsuna, naturally. A variation is "Secchan", which becomes canon later on.
SetsuPoji: Setsuna's pose while bowling in episode 15. Was already a meme before said episode even aired.
Northa Klein:The unnamed fusion of Northa and Klein.