Can I use auto lip sync in Character Animator with my own cartoon jpeg or png?

But you can definitely take a static image, then just do the part about mouths skipping moving arms and legs, eyes, etc. You don't have to do all of that if you only want to animate the mouth. You will have to turn into an illustrator or photoshop file however. You will need to drop in images for each mouth position to display when it hears a particular sound.