Kakuranger, Shinkenger and Ninninger monsters were based on Yokai. Yokai are ancient Japanese monster folklore. The ones from Kakuranger were Yokai but had 'modern influences.' The Ayakashi have a more complex look and has more to do with an animal. The Yokai in Ninninger also had modern themes and components. In Power Rangers, all these references were not referred to and were just taken as any monster. In MMPR, they were Aliens or monsters created by Zedd and Rita or Finster. In Samurai, they were Nighlok from the Sanzu River. In Ninja Steel, they were Alien game show contestants.
It is described as a japanese chimera having the head of a monkey, the limbs of a tiger, the body of a Japanese raccoon dog and the front half of a snake for a tail. In other writings nothing is stated about its torso, so it is sometimes depicted to have the torso of a tiger. The two monsters look very similar.
It is a ghostly oxcart with a face on it. Legend has it that on misty nights that are lit by the moon in Kyoto, people can hear squeaking sounds coming from an oxcart. When the person steps outside, they would find the Oboroguruma parked outside their home. Kakuranger had it as a taxi cab.
Kakuranger: Amikiri / MMPR: Witchblade