Kibaoni Army Youkai

The monster of the weeks for Shuriken Sentai Ninninger are called Youkai.

Youkai Kamaitachi

(妖怪カマイタ)

Base object - Chainsaw

Voiced by - Inada Tetsu

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Formed from a chainsaw. Its name means "sickle/kama" and "weasel/itachi", and he has sickles on his arms, chainsaws on his shoulders, and some sort of weasel on his back that looks like a Noh mask when on his head.

When he first comes to life, he laughs "Chee ha ha" which sounds like "Chainsaw".

It's based on an actual Youkai (鎌鼬) from myth. "They appear riding on dust devils, and they cut people using the nails on both their hands that are like sickles. One would receive a sharp wound from it, but there is no pain." [1]

Youkai Kappa

(妖怪カッパ)

Object - Fire Extinguisher

Voiced by - Kondou Hironori

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The fire extinguisher motif can be seen throughout his design. The tube is on his back as well as the extinguisher warning label.

Based on the mythical kappa monster, which are like humanoid turtles that that eat cucumbers, have plates on their head that hold water (which they need to stay alive).