What is "gedoushu"

The are the fictional antagonists of the thirty-third Super Sentai Series Samurai Sentai Shinkenger, facing the current (eighteenth) generation of Shinkengers, having been sealed away years ago by the previous generation of Shinkengers. In the world of Shinkenger, the Gedoushu are the inspiration of all the yōkai in Japanese mythology. The main Gedoushu characters are modeled after the Seven Lucky Gods and sea creatures.