I suppose all of my characters are attractive to me, on some level, and while I've never gone out of my way to make an "ugly" character I also try not to pick images or faceclaims that are *too* attractive. I usually avoid photos of models for this reason, instead I'll search images depicting a specific hairstyle or facial expression. To me, it's more important to make my characters unique, and that has so much more to do with their personality than their appearance, but I [i]also[/i] like their appearance to reflect their personality so that when people see the picture and read about their characteristics they can say "Ah yes, this character very much looks the way their creator describes them as."

Sometimes I add a little blurb under appearance detailing things you can't see in the picture, but if I find a good pic I tend to stick with it and not add anything else to the appearance section. Often I'll be browsing for a specific character and come across a completely different unique image and save it for later, because it doesn't work for the character I'm creating but I could definitely use it as inspiration for a different character in the future.

I don't know if this really answers the question of attraction or not, I want them to seem real and fit the setting. Characters with rough backstories have rougher appearances than characters who grew up in a loving home, etc. As long as it fits with what I think their personality is like (e.g. I would not choose a smiling photo for a serious character, or a straight-faced photo for a more lighthearted character). Mostly my goal is to impress a sense of their personality on whoever I'm RPing with, making them as believable as possible. Whether or not other people find them attractive is up to them.