For the ABCD headcanon thing: Captain Rex plz
A. Captain Rex has an inferiority complex because of not becoming a Commander, and thus, he felt as though he had to follow orders to the letter and essentially have a stick up his ass to gain the respect of his men.
B. Rex is a natural blond but dyes his eyebrows brown/tattooed them on to look more intimidating
C. He had a really bad fight with Cody shortly before RoTS over the the chips. Cody didn’t believe him, and the two ended the fight no longer on speaking terms. However, because Cody and Rex shared such a strong bond before that, Cody didn’t report Rex or breathe a word about his chip theory to another soul.
After the events of O66, Cody realized Rex was right and wanted to apologize to him, but heard the report that he died on Mandalore. He went into a lot of grief over that and became very jaded and cynical.
(Potential continuation to the headcanon in the event that Rebels doesn’t cover it!): Cody eventually either retires or deserts from the Empire. Nobody looks for him or misses him because he doesn’t join the rebellion, but eventually, somehow, Rex finds him. Rex has complicated feelings toward Cody: he knows that Cody now knows he’s wrong, and he misses Cody very much, but he also said some Strong Words during that fight and he still hurts from them. There’s a very tearful apology and reunion, and honestly, Rex forgives him, because Ahsoka’s no longer in his life, and he needs someone, and both of them know that they’ll work through the things they said. Cody joins the rebellion and either dies of natural causes before Rex or dies in battle.
D. Rex and Sabine had talks about the GAR and what it means to be a Mandalorian, and Rex also loves how well Sabine shoots, so they sometimes practice together and he gives her some tips. He really cares for her and loves her kind of like an uncle.