What are the key features to look for in a free AI comic generator with unlimited usage?

When choosing a free AI comic generator with unlimited usage, look for features like a wide range of art styles, customizable character creation, easy-to-use text integration, scene layout options, and the ability to export in various formats. Consider the quality of the AI's art generation and if it offers a community or tutorials for support. Ensure there are no hidden costs or limitations on the number of comics you can create.