I got a response from a local gallery:
"Thank you so much for your interest in exhibiting in (...) Gallery’s February exhibit. I would love to have 2-4 of your pieces depending on size. Can you tell me more about the work you make? Specifically the female figure/character that seems to make several appearances in different paintings." And not a Robotnik in sight.
Now I must concoct a story about this mysterious female figure.