It's her character, Tetra
Did you know you can score free art, like this one, from me? You totally can.
Over at http://patreon.com/jonfreeman there's several different rewards each month ranging from chibi lineart to fullbody flat color commissions.
Additionally I have a rewards program in place where you can periodically earn additional fullbody flat color commissions. Just ask me if you'd like to know more.