Zarbon
Zarbon is first seen in the anime and manga when he accompanies Lord Frieza and Dodoria to the Planet of Namek in search of the Dragonballs, which Frieza desires so that he can wish for immortality. Zarbon helps in the collection of most of the Dragonballs, mercilessly slaughtering Namekians who seek to keep the Dragonballs hidden. After Vegeta, and the separate group of Gohan, Krillin, and Bulma show up, there are some scuffles that leave Dodoria dead. Zarbon is the only remaining top henchman of Frieza, and is sent to find another Namekian village, but instead comes face to face with Vegeta. Vegeta overpowers him at first, but when Zarbon realizes his life is threatened, he surprises Vegeta by transforming into his significantly more powerful -- and ugly -- form. This allows him to easily beat Vegeta, who he leaves for dead.