Ben 10 au: Human-omnitrix

Human Omnitrix AU is a Ben 10 AU (alternate universe) in which the Omnitrix, an alien device that allows its user to transform into various alien forms, has been transformed into a human girl by using Ben's human DNA. She then convinces Ben to let her try and free the aliens that are trapped inside the watch. Ben agrees, and the girl begins to free the aliens one by one. It is a difficult task, and it takes her days to complete.

In this AU, the aliens that have been freed from the Omnitrix can turn into humans by using the Omnitrix. This creates a unique dynamic in which Ben and the other humans must learn to coexist with the aliens who are now living among them in human form. This creates a unique set of challenges and opportunities for the characters. For example, the aliens may have different values and beliefs than the humans, and they may have to learn how to navigate the human world in order to fit in.