In The Empire Strikes Back, Luke is paired with Dak Ralter just before the battle on Hoth. He serves as Luke’s gunner as they fly off in a snowspeeder to repel the Imperial attack.
Dak is made from a Biggs Darklighter figure. Since I have made a few other figures from this same figure, I wanted to differentiate Dak from them. I cut off Biggs’ gun and added a wrench from Chewbacca and a Star Trek tricorder.
Dak Ralter (image from Wookiepedia)