Some character (or perhaps more than one) is the opposite of the character's usual gender. This differs from the tag gender change: in that tag, a character undergoes a change of gender as part of the story; in this tag, the setup may be an alternate universe in which the character's gender was always the opposite of the usual.
| Title | Type | Date | Platform | Names | Characters | Series |
|---|---|---|---|---|---|---|
| Here We Go Again | Story | 1975-04 | Lee Burwasser | James T. Kirk, Leonard McCoy, Spock |
|