|Affiliation||47 Yōkai Warriors|
|Manga||Kitarō vs. Akuma-kun (1976)|
Waira (わいら) is a yōkai .
Due to the fifth anime adaption's sudden cancellation at 100 episodes, he is among the 23 Yōkai Warriors that were not revealed aside from the movie.
Waira briefly appears as one of the yōkai on the Ghost Train in episode seven who scares the company president. Later, he appears with the others, watching as the company president is sent to Jigoku by the Ghost Train. He appears in episode #28, The Great Yōkai War. He appears along with several other yōkai of the GeGeGe Forest to help Kitarō fight off the Western Yōkai.