The best replacement for kamehameha is galick gun.

The best alternatives to kamehameha are rated as following:
★★★★★  galick gun
★★★  hadouken
★★★  rasengan
★★  kamehameha
★★  spirit bomb
★  hadoken
★  big bang attack
★  final flash
★  kahuku
★  cero
★  rasen shuriken
★  punahou
★  heat vision
★  spirit gun
★  dodon ray
★  getsuga tenshou
★  john doe
★  doe
  punahou football
  masenko
  fus ro dah
  special beam cannon
  galic gun
  chidori
  vegeta galick gun
  saint louis

Your alternative for kamehameha is not listed? Suggest!
Speaking about kamehameha, one probably shouldn't forget about goku.

Other search terms related to kamehameha and their ratings are:
★★★★★ goku
You have in mind a companion for kamehameha and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of kamehameha in all years. Click on graph for more.
kamehameha
galick gun
hadouken