Chicken-butt sounds like a little character. Of course he regards you two as part of his flock, so you are his companions as well.
I have a little rooster who spends the night in a pet crate in the garage, and I got him a 4 x 6 inch mirror that is a few feet from his crate. When he comes...
I think Princess Hen will help Chicken-Butt Roo. It is really touching that your roo missed the cat so much. I have read other stories of how chickens can really get attached to a sole companion and suffer when that companion dies. That's why I am concerned when a chicken only has one...