okay... i'm really surprised no one has stared this yet. so you need to give the character that you headcanon as aromantic AND your reasoning (otherwise it's just a list tbh)
i'll start:
Rey from The Force Awakens: this bean is the best, so far she hasn't been given a love interest or been giving anyone The Look (tm), which is surprising because it is a Star Wars movie. I just want the new movies to end with her happy somewhere with lots of green and in a QPR with Poe and Finn,, i kno its not going to happen,, but i want it to.
Dean Winchester from Supernatural: i didn't start headcanoning him as aro until i saw a post on Tumblr tbh. I can kinda see it because he honestly seems to be happy just on the road with his bro and the occasional one night stands. and also this picture:
i rest my case (and i really really want that hoodie ahhhh)
post yours!