Emily is a character that we don't have much info about. She "came from a different comic book" to help Inventor and Robot get rid of the rip in their comic book.

She can travel through portals to transport anywhere, including different worlds. The book she comes from is unknown, but it is likely that it is a sci-fi book where they have lots of high-tech mechanisms, like portals.

She is also always wearing high-tech invisible armor, but you can't see it (because it.. its invisible...)