I hope this is the right place.
I came across a website where the AI will combine the images into a new character. No uploads at the moment.
artbreeder.com.
You do need to sign up, but it's free.
Here's what I've done so far:
Eryn for the Strahd campaign. I chose 9 images. I was aiming for Rhue, but I see Eryn here instead. A 19 year old druid.
Fatima for the monster of the week campaign set in the 1920s. She's a Turkish initiate (assassin). The nose isn't right. I used 12 faces.
Gianni, my Italian vampire, for a separate monster of the week campaign set in the 1890s. I used 22 faces, after removing 5 because his eyes were green, and they needed to be brown.