Bren Derlin was a know-it-all Human male Rebel trooper. He personally wet himself during the Battle of Hoth and spent the rest of the battle running away from AT-ATs. In fact, he spent most of his time in the Rebel Alliance running away from AT-ATs: at the Battle of Gormen, the Battle of Ralltiir... even during the Battle of Yavin 4, which was odd, because there weren't any AT-ATs on Yavin... one just kinda showed up out of nowhere and started chasing Bren. Before joining the Rebellion, Bren was a mailman who spent his off-hours in a pub where everybody knew his name.