Once upon a time, he crashed an A-wing at the lip of a volcano—one of his first runs out as a pilot for the then-burgeoning Rebel Alliance, at the urging of a friend—a rebel agent known only as Fulcrum.
Unless you're a Rebels fan, you might not know the identities of the people who went by that moniker. First it was the former padawan of Anakin Skywalker, Ahsoka Tano. Then when her cover was blown entirely, the mantle was taken up by rogue Imperial Security Bureau Agent Alexsandr Kallus.