If you're looking for something to replace AI Comic Factory, ComicsMaker.ai is a good option. It's got a range of AI tools to create comics automatically, including a Page Designer, Text to Image, and Image to Image tools. You can pay for a variety of plans from free to Pro, and you can download comics as PDFs or CBZs, and commercial use is permitted under an open license.
Another good option is Dashtoon, which is geared toward consistency and control in your comic creation. It's got a character library, several style options, and AI tools for storyboards, background removal and image upscaling. You can also publish and monetize your comics through the Dashtoon Reader app, so it's good for both beginners and more advanced creators.
Shortbread is another AI tool designed to let you create comics even if you can't draw. It's geared toward designing characters, poses and scenery. It's good for productivity and for creating comics that'll appeal to a broad audience, so it's good if you want to see your ideas come to life.
Last, Neural Canvas has a relatively simple interface for photorealistic comics with a range of moods and styles. It's got more than 100 characters and several illustration styles, so even if you're not artistically inclined, you can use it. The simple pricing and commercial rights in the $3.99 package make it a good option for comic book fans.