SkyReals is a top contender, using sophisticated AI algorithms to ensure consistency in character styling, backgrounds, and other details. It's easy to use, good for both beginners and those with some AI experience, and good for telling a story in a comic. It's got options like image reference mode, detail tweaking and two-character composition, and costs from free to $15 a month.
Another strong contender is ComicsMaker.ai, an online tool that automates a lot of the comic creation process. It's got a Page Designer, Text to Image, Image to Image and ControlNet tools to turn your ideas and references into comic art. The service also has Pose Creation, Inpainting, Region Prompting and Character Training for maximum realism. It charges by the credit, with Free, Hobby and Pro tiers, so you can pick the level of service you need.
Dashtoon Studio is another powerful option that's all about consistency and control. It's got a character library, multiple styling options and AI tools to turn storyboards into comics, remove backgrounds and upscale images. You can publish and monetize your comics through the Dashtoon Reader app, so it's a good option for serious artists and newcomers.