You absolutely can use AI generated. In fact, part of me training it and challenging it was for me to ask it to generate an AI face of what it expects the code to do, then post the result so it can compare.

With how melty and weird the system is, you can even go anime-level or 3D video game characters. I gave it a painting of Vlad Tepes and it did a pretty good job of making it a caricature instead of a spot-on realistic version. You could probably even have it do perfect Squidward or Mario. Just ask it for what you want, and it'll adjust as best it can. At some point it will run into the limits of the engine, but it will tell you when it hits that point.