Vegito is the Potara Fusion of Goku and Vegeta. He was first (and lastly) introduced in the battle against Super Buu (after he absorbed Gohan and Gotenks and Piccolo). Even after that one appearance, he became one of the most famous characters in the series.
Vegito in his base form wears a blue gi with an orange shirt under it. His face is more like Vegeta's, but it has some of Goku's in it as well. He wears the white gloves and boots of Vegeta and also wears Potara Earrings with black hair. In his Super Saiyan Form, he looks exactly the same, just with lighter clothing by a tiny bit and yellow hair and eyebrows.