Cleveland Booker

Cleveland Booker, known as Book, is a Kwejian courier of the 32nd century who meets Michael Burnham when she arrives from the past at the start of the third season of Star Trek: Discovery. Accompanied by his cat Grudge, he has an empathic gift for connecting with other living things, which later lets him help navigate Discovery's spore drive. He and Burnham become partners, but the destruction of his homeworld Kwejian by an anomaly in season four drives him to defy the Federation alongside the scientist Ruon Tarka. After answering for his actions, he works with Starfleet again in the final season, and an epilogue shows him married to Burnham with a son, Leto.