This tag is ambiguous.
Hadou-hou (波動砲, wave cannon) is a common name for various types of weapons in different series.
Weapons called "hadouhou"
- Wave Motion Gun - Uchuu Senkan Yamato
- Wave Cannon - R-Type
- Flare Wave - Cloud Of Darkness (Final Fantasy III) and Omega (Final Fantasy V)
- Akantor Heavy Bowgun - Monster Hunter Frontier