Heterosexual — comfortably enough so that willing to be playful and dance with Luke at his wedding — usually unshaven and casually dressed. If you're struggling for a physical description, think a young Val Kilmer. A loner, he is not very trusting of most people; though he would trust Kirena to be able to look after herself — at least, prior to the events of Remiel — and the Doctor too, it's something he might not do with anyone else in his life, including Angela.
Life Before the Doctor
The youngest of a large family, Jadi was brought up by his eldest sibling Kirena when his mother died giving birth to him. First met the Doctor in DeathRace!, which ended with him rushing off to help his sister Kirena after receiving an urgent and cryptic e-mail from her.
Life With The Doctor
He was pursuing Angela Ferris when he met the Doctor and Wil Young in Revolution 9, and both Jadi and Angela ended up aboard the TARDIS. During the course of their adventures, the bounty hunter and his bounty fell — madly, passionately, sometimes confrontationally — in love and got married at the end of Ticket to Writhe before the pair left the TARDIS and settled back on his home planet of Kapone.
Life After The Doctor