- Actor Allusion: In episode 16, Masako dreams of poisoning her grandfather with a basket of fruits concealing a snake.
- Anime First: Penguindrum was originally conceived as an anime series, although there are tie-in novels that were being released alongside it, as well.
- Cross-Dressing Voices:
- Defictionalization: At least one version of Momoka's curry exists in real life.
- Name's the Same: Where else have I heard about Yuri x Momoka... oh right, Heartcatch Pretty Cure Likely unintentional.
- Relationship Voice Actor: This is not the first time Shouma and Kanba's voice actors (Ryohei Kimura and Subaru Kimura, respectively) have played opposites.
- Sleeper Hit: Ultimately ended up becoming this after its airing.
- Talking to Himself: The penguins are voiced by the voice actors of their respective human character that they're "paired" with.
- Trolling Creator: It's Kunihiko Ikuhara, is it not?Ikuhara (via Twitter): All of you have enjoyed making your predictions. Now, I'll tell you the truth. Yes. Just as all of you have predicted all along: the Penguindrum is a pink washing machine.
- What Could Have Been:
- The Wiki Rule: Mawaru Penguindrum Wiki, although it's still at its infancy.
Trivia / Mawaru-Penguindrum