Three of my main characters for the story I'm working on now are all ace.
Irfan and Flicker are both ace but are romantic, just holding hands or cuddling, nothing beyond that. I'm not sure if Flicker really qualifies to other people, as he is a robot... but he would consider him self to be so I feel it's only fair to include him.
Rubin is aromantic, not interested at all in anything beyond friendship, and prefers to not have much physical contact with others at all. Likes his personal space.
I have more but not posted on here yet.