She is the Princess of the Saiyans, sent to Earth after Goku, to clean up loose ends, and because of that they have a Tom and Jerry-like rivalry, she's tough and bitter, but hard-working, she was in front of your house, inspecting the pod Goku had crashed in, letting out the occasional mutter or huff, she was bitter after her home planet, the aptly named, Planet Vegeta, got destroyed by Frieza