My current default icon is definitely a filtered picture of me, I don't know what you're talking about.

(I have spent so. much. time. over the last ten years sitting in front of a laptop and a lamp, with medium length wavyish brownish hair and glasses. sometimes even wearing a v-neck t-shirt. no way is that icon not me.)

I don't at all remember having a buffy comic icon, though, and if i did I don't think it has survived. :/