An
energy attack used by
Son Goku in the
Dragonball series of
manga and
anime.
Growing
increasingly powerful each time
Goku powers up, it becomes one of the best attacks in his
arsenal, though this attack was later
copied by
Cell and
Majin Buu, and used against him (albeit unsucessfully).
The
name for the attack came from the name of a past
Hawaiian King,
Kamehameha I (second and third).