2-1B/Legends

2-1B (also spelled out in literature as Too-Onebee) is an Imperial medical droid who decided voluntarily to work for the Rebel Alliance instead. 2-1B was the head medic in Luke's revival from the wampa attack on Hoth. For this reason, Luke chose 2-1B to be the droid that attached his cybernetic hand in The Empire Strikes Back. An advice column written in his persona would briefly appear in the Star Wars Insider.