Signature Move: Kakure Ryu Ku no Ji Kirinote Hidden Style Ku Character Slash
The Smart Girl: She's simply a much-more skilled Ninja than Sasuke. Subverted in that she's actually the team leader. Also, she's single-handedly killed Monsters Of The Week before they ever got the chance to grow.
Crouching Moron, Hidden Badass: ... on a typical day, that is. If he sees an imminent danger that threatens many people (ESPECIALLY KIDS), he'd shed his 'bumbling fool' role and be a competent ninja that makes his ancestor/namesake proud.
Pint-Sized Powerhouse: Subversion. Seikai himself isn't exactly a real big/fat guy, but he tends to act and fight like he's bigger than his usual size, yelling the sumo Battle Cry "Dosukoi!" (Even though he doesn't use sumo).
Hot-Blooded: As with Sasuke, he's something of an Edokko.
The Mentor: Takes up the role after Sandayu's death.
Shout-Out: Quotes Tora-san occasionally, after being called 'Aonisai' ("You said it, it's aaaaaall over now that you've said it!"). Maybe he's a fan?note Kazuki Yao is, and this was a Throw It In on his part.
Sixth Ranger: Unlike Burai and Ko, Ninjaman has no human form and wears bulky armor instead of spandex. Rather than riding a giant mech, Ninjaman grows giant size and has an alternate form. Despite the fact that he takes the role of the sixth member here, Ninjaman was later retroactively classified as a "bangai hero" in Boukenger's Sentai retrospective.
Spanner in the Works: A handful of plans in the later episodes fall apart simply because the Youkai forgot to take him into account.
Voluntary Shapeshifting: Can change size, from tiny to mecha-sized, and can also change shape. It's apparently rather easy for him, and he'll use it for really mundane things like startling a misbehaving kid.
His change into Samuraiman is also this, but he only does it once (against Daidara-houchi).
Home Base: For the Kakuranger. Unusually, Nekomaru is their means of transportation and money, but they sleep outdoors in tents as it simply isn't big enough inside.
Mechanical Lifeform: Moreso than the Sanshinshō. Seikai can be seen repairing it at one point, and it is as affected by catnip as a normal cat (though the dose has to be larger).
Breaking the Fourth Wall: Constantly. As part of the post-modernistic nature of the show, he physically exists in the Kakuranger universe, to the point that the platform/stage he narrates from had to be moved out of direct action once.
No Name Given: Doesn't seem to have a name, and is 'Narrator' in the credits. Frequently refers to himself as 'Ojisan'. (It might be Everyone Calls Him Narrator, but no one ever actually addresses him.)
The Narrator: Presents the show like a Kyougen narrator (which the actor actually is).
The Sanshinshōnote The Three Divine Generals
Muteki Shogun | Voice: Tomoyuki Horita
Tsubaramaru | Voice: Dai Matsumoto
Kakure Daishogun | Voice: Dai Matsumoto
The Power of Love: They explicitly say that, if Daimaō is powered by hatred and suffering, they run on this and courage and hope instead.
My Death Is Just the Beginning: Killing him will spread hatred and suffering into everyone, like grenade shrapnel. The trick is to seal him away, behind those gates that Sasuke and Saizou accidentally opened in the first episode.
The Power of Hate: He is the physical realization of hatred and suffering. Can't actually be seen by normal humans due to this, if he so wishes.
Weaksauce Weakness: He mustn't be attacked directly, but due to being The Power of Hate incarnate, he can be physically pushed into the sealing gates by those with particularly strong will.
Young Nobleman Junior/Gasha Dokuro
Bad Boss: Largely averted. He's hardly a good boss and his subordinates are justifiably fearful of his wrath, but he's quick to reward competence and is generally devoted to the well-being of the Youkai.
Dangerously Genre Savvy: What makes him so dangerous is that his plans typically involve the Youkai of the Week striking the Kakurangers in ways and places that take advantage the usual Super Sentai genre conventions. The Kakurangers are strongest as a team? Split them up and attack them individually. They have incredible skills individually? Trick them into showing them off in public, to a Youkai who specializes in copying skills. And so on. He's even properly suspicious of Hakumenro.
Disc One Final Boss: It takes getting a whole 'nother giant mecha to actually beat him, and even then...
Humanity Ensues: Originally cats. They've apparently taken to their human forms, and can be seen swimming in a pool during their time off.
Psycho Rangers: They are a counter-Kakuranger ninja team in general, and aren't counterparts of the individuals. (It's worth noting that the Youkai generally aren't ninjas, so a specialized team of them makes more sense in practice.)
Elite Mook: Are eventually downgraded to this, as while they're consistently better than rank-and-file Dorodoros, the Kakurangers begin outpacing them after overcoming their trials.