Desmond Hume is a fictional character from the television series Lost. He is portrayed by actor Henry Ian Cusick and is known for his unique ability to experience time in a non-linear fashion. Desmond's character is central to many of the show's themes, including fate, free will, and the nature of time. Initially introduced as a castaway on the mysterious island, Desmond has a complex backstory involving his time in the British Army and his relationship with Penny Widmore. His journey explores deep emotional connections and the impact of choices, making him a pivotal figure in the series' narrative.