Shidaidaka (次第高, lit. gradually high) is a yōkai.
Shidaidaka appears as a rather tall, beige blob-like entity, having towered over the trees. Their face consists of a pair of large eyes with light yellow sclerae and tiny black pupils, a large gaping black mouth with no visible teeth rests between the eyes.
Shidaidaka is one of the chosen 47 Yōkai Warriors and represents Yamaguchi Prefecture. During the battle against Yato-no-Kami in GeGeGe no Kitarō: Nippon Bakuretsu!!, Yobuko calls for help from all over Japan, the remaining 47 Yōkai Warriors are revealed once their mark begins to shine. Among those are Shidaidaka, who looks down when its mark appears. Afterwards its power is sent to aid Kitarō in defeating Yato-no-Kami.
Due to the fifth anime adaptation's sudden cancellation at 100 episodes, he is among the 23 Yōkai Warriors that were not revealed aside from the movie.
According to legend the Shidaidaka appears at roads, when those who see it look up, it would grow correspondingly taller. Where upon those who look down, it gradually becomes shorter, if kept a steady gaze then it would steadily grow taller.