Freezer

is a mutant alien, brutal dictator and leader of the Galactic Empire of Universe 7 with the secret strategic support of his father Cold. In the movies he also leads this empire with his older brother Coola. In addition to being considered Frost's counterpart from Universe 6.

Freeza is the first great and true villain in Goku's adulthood stage with the ability to transform into several stages. This helps him, as Vegeta confirms in the series, to keep his great power stabilized, which he is unable to control by himself. Freeza's final form, and therefore his real form, is the strongest of the four appearances that the villain assumes in the series, the previous three being containers of his great power.