There’s a bunch of fan art and various other artistic contributions, plus some speculation. Good stuff!
http://spyro-skylanders.deviantart.com/gallery/
I’ve linked a few of my favorite pieces of fan art below (hopefully the artists who made them won’t mind too much) but there’s some other good stuff on the site.
http://matildathemoonwolf.deviantart.com/art/Skylander-Spyro-198316989?q=gallery%3Aspyro-skylanders%2F28639425&qo=6
http://slawomiro.deviantart.com/art/skylanders-spyro-197136534?q=favby%3Aspyro-skylanders%2F42920008&qo=5
http://deltorafann001.deviantart.com/art/Skylander-Lolz-197050980?q=favby%3Aspyro-skylanders%2F42920008&qo=7