You were revived by the dragon balls, and you were first met by your brother Goku, and when you tried to attack him, he stopped you and made a deal with you, if he can convince you Earth isn’t so horrible, you’ll leave it be. And frankly, Goku was the only one who trusted you, while you were at his house, Goku’s wife Chi Chi stormed up to you “Now look here, mullet! My husband may trust you, but I don’t, if I see you pull any tricks, I’ll rip your head off!!!”