[quote=@Kitsune]
[@Hillan]
Weeeeeeeeeeeeeeeel Arch is right. Look on the wiki and you will see Frieza AND his family are all mutants with abserdly high power levels. Though the transformation thing is normal for their race it simply hide their power not boosts it unlike golden, that is why Frieza has so many transformations because his power is boosted from being a mutant. So being apart of Frieza's race is 100% acceptable as they would likely be that weak. 
[/quote]

No place in canon mentions Frieza being a mutant, as far as I am aware. Ginyu mentions _them_ being mutants. I.E the Ginyu force, when Goku shows up. Also, no where is it stated that Frieza has more forms than Cooler or Cold. Cooler's a trained warrior, he can control himself in his perfect form. Fan theory is that Cold could not control himself in his final form (Like in DB multiverse) and he ends up busting planets on accident. They seem to be royalty, so it does make sense they're the stronget of their race, but I don't see any member of Frieza's race being lower than 1 million in Power level in their final form.