Jessica Padkin
From Sonic Retro
Jessica Padkin is the extremely talented blue-haired artist of the community.
She's drawn some great Sonic-related stuff, and is available for commission.
Also famed for ripping the Sonic The Hedgehog History Video, showing off never before seen concepts for the Sonic Character.
External link
You can see her art at: http://jessicapadkin.deviantart.com/