* {{Anvilicious}}: This show's {{aesop}}s... aren't very subtle.
* EnsembleDarkhorse: Unagi of The Legion of Low Tide. Apparently the writers were fond of him as well, since he was the focus of more episodes than the rest of the legion.
* FanPreferredCouple: Ikura/Kani, Tako/Maguro.
* PeripheryDemographic: Popular with teenagers.
* TheyWastedAPerfectlyGoodPlot: In the MirrorUniverse episode, the "Good" versions of the Legion hog most of the screentime. The "Evil" versions of The Pack and Mayor Martin only get one scene each.
* ViewerGenderConfusion: Hideki has a feminine voice and is pink with eyelashes, but is referred to as a male and has a masculine name.
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