I wanted to try making a mockup using C64 restrictions, which turned out to be a bit more of a challenge that I'd thought, and I didn't really have any ideas for it. The main character was just a doodle that evolved into this. I decided to draw a larger and more detailed drawing of it, which my boyfriend named Sally. Still C64 palette, but otherwise no restrictions.
The Pixelation thread has more details about the initial steps.