Jeroen Webb was a Human male native of the planet Ralltiir who became a spy for the local Ralltiir underground following the Imperial subjugation of his homeworld. Webb helped his close friend Pharl McQuarrie stage a diversionary raid on Ralltiir that allowed information concerning the Empire's first Death Star battlestation to reach Princess Leia Organa of the Rebel Alliance, culminating in the Death Star's eventual destruction at the Battle of Yavin. Three years later, Webb once more worked alongside McQuarrie at Echo Base, the Rebellion's High Command headquarters on the ice planet Hoth.