You can ask someone who's been keeping up with AI gen for the last few months in the dedicated thread, but I'll try my best as someone who was in at the release of SD1.4 and decided to wait until it was a little more baked and came back this last week because of the Bing AI stuff that's everywhere.
Anyways, steps. You can train a model on Nolan if he's given us enough images in enough different angles to make a good LoRA/Hypernetwork, and then once you have the model, you just paint over Riddler's face and tell the AI to make Nolan.
If you can't or don't want to wait however long it'd take your GPU to make a dedicated Nolan model, you could always do the same inpainting steps over the Riddler's head and type out details, like "8k, movie, unibrow, thick glasses, smug face, messy hair", etc. But that's a lot more work on you to make the prompt, and it's not "Nolan" as easy. You'll also want to go and find a model on
https://civitai.com/ that works with what you think your looking for style wise, especially if you aren't training a model.
One last tip, the "easynegative" textual inversion is very useful. It used to be you'd have to make a prompt for what you want, and a prompt for what you don't. easynegative basically handles the latter. That should be it, ask in the AI thread if you have any more questions.
Nolan is pro-racism
