Yamcha

Yamcha (ヤムチャ Yamucha?), known as Zedaki in the Harmony Gold dub, is introduced as an outlaw and a bandit. He starts out as an antagonist of Goku's in order to steal his Dragon Ball and wish not to feel nervous when being near to women. He eventually reforms, becoming an ally and Z Fighter, and starts a relationship with Bulma. After participating in Baba's tournament, Yamcha requests to become the pupil of Master Roshi, to which Master Roshi obliges. He qualifies for the 21st Tenkai'chi Budo'kai fighting tournament, but loses to a mysterious old man, Jackie Chun, who is actually Master Roshi in disguise. He continually questions Master Roshi on his true ability, but is unable to find the truth. As a result from such training, Yamcha becomes able to develop various energy techniques such as the Kamehameha and the Soukidan, an energy sphere which he can control after throwing it. He soon becomes able to fly and is able to train with various gods from the Dragon Ball universe. He was killed in battle by Vegeta's saibamen. After the attack from the Red Ribbon Army's androids, he quits fighting, noting that he is very weak in comparison to his friends. His constant companion is Puar. During the series, he holds a romantic relationship with Bulma, but they break up some time after Future Trunks' first appearance, and Bulma ends up marrying Vegeta.

Information from:
http://dragonball.wikia.com/