In this story Flug has two personalities. Dr. Flug and Dr. Slug (heroic au). The only way Dr. Slug can be heard or seen is if Dr. Flug's paper bag were to come off. Dr. Slug can actually speak to Dr. Flug but only in his head. You will see the conversation go like this. Slug: hello (slant word font) Flug: hello (bold word font) If the bold and slant fonts are together, that means Dr. Slug and Dr. Flug are speaking out loud together. That's all you need to know. the only way Dr. Slug can speak outside of Dr. Flugs mind is if they are both are thinking the same thing. Doesn't matter if one doesn't want to say it or not it'll just come out. Nightmare jelly idea came from @introvertedbandtrash's story claimed.