William T. Riker (mirror)

William Riker was a Terran privateer who worked his way out of the Klingon-Cardassian Alliance's slave mines and earned himself a position serving the Intendant of Betazoid, Deanna Troi. Sisko was Troi's lover, and commanded a small raiding ship crewed by other Terrans, charged with collecting "duties" from passing ships. In short, Sisko was a pirate.

Although Riker resented his position under the Intendant, he had no desire to become a "hero" or resist the Alliance's rule. However, when he met a William Riker from a mirror universe in 2370, the thought of the possibility of being free of Alliance control, combined with Troi's assertion that he was still just a slave but didn't realize it, convinced him to change his mind and reject the Intendant's authority. He helped the other Riker, along with John McArthur return to their universe, and recruited slaves Geordi la Forge and Beverly Crusher, along with her son Wesley, into the Terran Rebellion. Later, Riker became the first officer of the Terran Rebellion starship the ISS Enterprise (NCC-1701-D), under the command of Jean-Luc Picard.