Hartro Piltz is Trexel Geistman's unfortunate line manager.
Season 1 Edit
While her voice is heard in the first episode, she doesn't physically appear until Episode 5. Subsequently, she shows up every 5th episode for a review (and occasionally other times as well).
During the review she berates both Trexel and David for their bad planets. However, this seems to be one of the best reviews Trexel has ever received.