Black Frieza is said to get closer to a god of destruction force faster than Goku and Vegeta! Toriyama explains the secret behind his power.
Every god of destruction ranked from weakest to strongest?!
Frieza is Dragon Ball's Hitler, whose father took over the Saiyans and tamed them to do his bidding. Originally, the Saiyans were a warrior race that once inhabited the planet Sadala and later the planet Vegeta.
Their self-imposed occupation was to completely exterminate other races inhabiting other planets and sell those planets to the highest bidder.
Later, King Cold managed to bring the entire race under his control and transferred this responsibility to Frieza. That is why Vegeta will always have a grudge against the Galactic Tyrant and in the Super Hero arc, Vegeta made him the main target to defeat.