- Casting Gag: Megumi Han, the voice of Kyuemon, is also Sayla Mass on Gundam The Origin, and Kyuemon actually gets a Humongous Mecha down the line... but it's based on the Qubeley. Someone got their references crosswired...
- The Danza: Kasumi Yamaya plays Kasumi Momochi, this year's pink ranger. (Though, the two names are written with different kanji.)
- Delayed Release Tie-In: The toys became this after the previous series had its' penultimate episode delayed for breaking news; since they still came out around the time the original series was supposed to air. Even the television advertisements for said toys that aired on the final Toqger noted that they were now available instead of saying they would be released the next week as usual.
- Hey, It's That Place!: Apparently Kinji's family's monster hunter business took them as far as Gunman World. Specifically "The Maverick" saloon!
- Meaningful Release Date:
- The series debuted on February 22nd, known as "Ninja Day" since "2" sounds like "ni", or "Nin-nin-nin", even if that wasn't the show's intended launch date.
- The Milestone Celebration episode fell on April 12th (yo-i-ni), with the Next Episode Preview dubbing it "Good Ninja Day" (佳い忍日). If the Release Date Change wouldn't have affected the show's schedule, it would have been aired in April 5th, the premiere day of the first episode of Himitsu Sentai Goranger.
- Milestone Celebration: This series celebrates the 40th anniversary of Himitsu Sentai Goranger. To celebrate it, the April 12th episode had the Ninninger team up with Ninja Red and Hurricane Red, with Akarenger making a surprise cameo.
- Mythology Gag: It has its own page.
- Name's the Same:
- Not just the Yokai termnote , but a lot of Yokai names in Ninja Sentai Kakuranger are going to appear here. Of special note, Gashadokuro was The Dragon back then and a Monster of the Week here!
- Deliberately averted with the reveal of the new lion mecha which ISN'T called Lionmaru or Shishimaru, but Lion Haoh-Jo. There's a reason why.
- No Export for You: Surprisingly, averted in South Korea. They skipped Power Rangers Ninja Storm/Ninpuu Sentai Hurricaneger, going from Power Rangers Wild Force to Bakuryuu Sentai Abaranger, and then skipped Samurai Sentai Shinkenger and Kamen Rider Gaim, all because of their overtly Japanese motifs of ninja and samurai. You'd think then, that Ninninger would be skipped as well. But nope, they're getting Power Rangers Ninja Force.
- Prop Recycling:
- Past Youkai defeated by the team tend to reappear during their subsequent training. For example, Kamaitachi, the Youkai of the Week in Shinobi 1, reappeared in a training simulation in Shinobi 4.
- The Hyper Battle DVD brings back the Mooks from Kakuranger and Hurricanger!
- Played straight in Shinobi 26, with a new Nekomata, except it's called Mataneko, whose watch face is a different color and has a new Verbal Tic too. Then it's done yet again in Shinobi 42 — this time they add a pair of glasses to it and call it Meganekomata, but it has a different VA this time... because it's actually Tsumuji in disguise.
- Shinobi 43 goes even further with several past Yokai being summoned by Fudagaeshi, even revisiting the places they appeared in as well. Even Yakumo's lawnmower makes an appearance!
- Real-Life Relative: Two of Takashi Sasano's sons have roles in the series. His eldest son, Shota, played the younger Yoshitaka Igasaki in episode 44 and his second eldest son, Yuma, plays one of Nagi's classmates in the final episode.
- Release Date Change: Was meant to launch on February 15th, 2015, ended up moved back a week after ToQger 46 was pre-empted for news coverage, meaning that episode 47, it's finale, needed the timeslot.
- Show Accuracy/Toy Accuracy:
- The Shinobimaru, Dragomaru, Rodeomaru and Surfermaru toys cannot move their legs well due to them being attached together by their shins. The former two even have hands at their knees and thigh area, respectively. There are, however, "Super Sentai Artisan" collector's edition toys of Shinobimaru and Rodeomaru that represent the individual versions of those mecha; they can't perform all the combination functions of the regular DX versions of them but are still to scale. Shinobimaru can be used to sit in the center of Shurikenjin, while Rodeomaru can ride the Bison King Buggy. Same for the Akaninger Chozetsu articulated figure included with the SSA Rodeomaru, for use with the Lion HaOh.
- For King Shurikenjin, the show will only play its own jingle, while for the toy, you will inevitably hear the regular Shuriken's jingle in the process, while combining the mechas together. This is also the case for Ha-Oh Gekiatsu-Daioh, where Ha-Oh Shurikenjin's sound will activate.
- Both Goton Shuriken (Nin and Yo) all refer to something of relevance to the Japanese: the Goton Nin Shuriken's elements are derived from the five classical Chinese elements, while the Goton Yo Shuriken are how the Japanese pronounce the 5 vowels of A, I, U, E, O.
- The Wiki Rule: Covered as part of RangerWiki, and as an individual series on the Ninninger Wiki.
Trivia / Shuriken Sentai Ninninger