Added some more images, retrained with new captions. This is getting much closer to what I originally envisioned for this idea. Waldo can even appear in the images now but I haven't found a way to get him to hide in the crowd yet...he more just observes the scene. No triggers needed but prompt something like "where's waldo wearing a horizontal red and white stripped shirt and bobble hat, glasses" to get Waldo in the image.