The site is called Face Your Manga.
My 11 year old daughter, Broadway, grabbed onto this site quickly, and was whipping up avatars with the greatest of ease.
The interface is very user friendly and the options for your own unique avatar are endless.
Best of all, its totally free to create your one of a kind avatar.
Broadway created an avatar for herself and Imagineer as well.
She will create ones soon for Mountain Man and Bam Bam too.
If you’re in the market for an avatar, I recommend you check this site out. Very easy, FREE, and super fun!