- 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.
- 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 from the Delta Quadrant. In their backstory you will have to include detail of why and how they ended up in Starfleet, or if they are a civilian, how they ended up in the Alpha Quadrant in general.
- 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.