- This species is from a culture that follows laws or policies that conflict with that of the United Federation of Planets. They would have to subscribe to Federation ideals instead of that of their homeworld.
- Canonically, no one has seen what a Breen looks like under their helmet until the 32nd century. If you roleplay a Breen, they will have to remain wearing their helmet unless by themself or with another Breen in private.
- This species is not a member of the Federation. In order for a character of this species to apply to Starfleet Academy, they will have required a letter of recommendation from a Starfleet officer ranked Commander or higher.
- This species is hostile to, or presently at war with, the United Federation of Planets. You will have to include extensive detail as to why they have chosen to leave their own people and join the Federation instead.