Dragon Ball Z, Season 2

Dodoria:
Here's my little secret, Vegeta. You remember how Frieza explained to everyone that your planet was destroyed by a massive meteorite? That's a lie. That's not the way it happened at all. I'm saying that it was Frieza and not a meteorite that destroyed your planet. You see, Frieza had been using the Saiyans to do his dirty work for years, as they are quite an impressive warrior race. Since no Saiyan could ever match Frieza's awesome power, they were easy to control. He would send the Saiyans to planets he wanted, where, if needed, they could transform into those huge, ape-like beings which your kind can become. In this state, they could easily clear out and level almost any planet. But over time, things changed. While Frieza could still easily defeat any Saiyan, several extraordinary fighters such as yourself, Vegeta, were beginning to emerge. You see, as a group, the Saiyans started to become a threat to Frieza and his power, a threat that had to be...dealt with. But you should be grateful, Vegeta. Since you were a prince of such talented skills, Frieza decided he would attack the planet while you were away. Personally, I don't know that I would have made the same decision about you, Vegeta. But then, it wasn't my decision to make.