The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
(first | last) View (previous 20 | next 20) (20 | 50 | 100 | 250 | 500)- FLIN (6 members)
- FNAFgender (14 members)
- FOCIN (1 member)
- FOGIN (1 member)
- Fablegender (14 members)
- False Coric (2 members)
- Fantasy System (2 members)
- Fascigender (1 member)
- Fasfogender (12 members)
- Faunagender (446 members)
- Featured (1 member)
- Felinus System (10 members)
- Felisgender (8 members)
- Female (1 member)
- Feminine Genders (5 members)
- Festivasgender (1 member)
- Fictigender (520 members)
- Fictional romance system (6 members)
- Ficto (2 members)
- Fictosexual (1 member)