PrestoBingo is made up of two artists, Joyce Hesselberth (that's her work on the left) and Dave Plunkert. I found their work on both trunkt and etsy. They describe PrestoBingo as 'modern art for modern kids'. They have several robot prints available (I guess I especially like these because my boys' room currently has a robot theme) along with other whimsical yet clean lined offerings. 
They also do graphic design and illustration work through their Spur Design website.
All of their sites are definitely worth a browse!
