Koromodako
The Koromodako is a Yōkai in Japanese mythology.Mythology
The Koromodako is a terrifying octopus-like Yōkai that lives in the ocean that borders Kyoto and Fukui. While they appear small, the Koromodako can grow to large sizes if they are threatened where they get big enough to engulf fish, large ships, and anything that might eat them. When it is done feeding, the Koromodaku shrinks back to its normal size where they are not seen for a while.In Shuriken Sentai Ninninger, the villain Masakage Tsugomori is modeled after a Koromodako.