I think one of my fave con memories is from the year I went to our local comic con dressed as Fiona from Shrek. I had TONS parents coming up to me, wanting pictures. Even more parents than kids wanted my picture!
The BEST parents were the ones with a baby about six months old. They told me their child wanted a picture with me. I count myself lucky the poor child didn't scream at the sight of a green-skinned woman leaning over him! But it was just so adorkably sweet that I couldn't say no.
Chiyo (Azumanga Daioh)
Twilight Sparkle (My Little Pony)
Rest to be decided.