- Heart was located through the space between their eighth & ninth right ribs
- Distinctive forehead ridges similar to the combs on birds
- Feather-like structures around their faces and on their brows
- Murderers were forced to relive their victim's last moments periodically;
- This was achieved by inserting the memory engrams of the victim into their brain
- Were at war with the Numiri, with whom they originally shared a homeworld
- 2371: A Numiri spy framed Tom Paris of the USS Voyager for the murder of Tolen Ren
