Charlie Hieronymus Pace was a survivor from the middle section of Oceanic Flight 815. Before the crash, he was the bassist and principal songwriter for the rock band Drive Shaft. He was addicted to heroin, but he kicked the habit on the island. He also suffered from self-doubt before the crash, but he formed new relationships on the island, including a friendship with Hurley and a romantic relationship with Claire Littleton.
Learning he was fated to die, Charlie Pace sacrificed himself to guide the survivors toward safety. After his death, Charlie has continued to guide his friend Hurley.
In the flash-sideways, he was reunited with his lover, Claire Littleton after she gave birth to Aaron, and along with their friends, they moved on.