Based on Walker, Kix stopped shaving because of the sorrow he felt when he seemed within the mirror as he was reminded of his fallen comrade brothers who he was struggling to preserve. Someday later on during the war, Kix accompanied the 501st legion, led by Jedi Knight Anakin Skywalker https://stephentuuts.wikinarration.com/6651357/5_easy_facts_about_kix_described