Since there aren't specific characters for you to audition for, we are asking that you audition to be an actor for this series by sending previous auditions under this single role. If you have a VA portfolio and / or any pervious acting experience from projects you've been in, we highly recommend sending those in as your audition. If you can't provide either of those things,  you can then simply provide a demo reel or something you recorded on the point. Although improv experience doesn't need to be provided (as we have events scheduled to help people who are new to improv) we want people who aren't going to be embarrassed when getting into character, and are fully willing to be somewhat immersed in their character, so then every character can have a chance to stand out and drive the plot forward. Again, your character doesn't need to be complex, but at least give a reason for why they're present in the story.