Chris Evans
Captain America from the Marvel Universe is superhuman in all its meanings. Not only is he nice to his fans, but he is a very decent human being and takes good care of his dog. His fans are always hoping they could meet him, and one even did.
A worker at a doggy daycare recounts that they regularly met Chris Evans when he would come back to his hometown to meet his parents and take his rescue dog, Dodger, to the daycare there. The worker went on to testify that Chris was a wonderful pet owner and would show immense love and patience to his dog. Not only that, but he would also be very nice to staff members.