First Law of Gender Bending: Difference between revisions

* ''[[Shade the Changing Man]]'' had to take over the body of a drowning woman in order to stay alive himself. Overnight, it reverted to female form and could not be changed back until he found the person responsible for the woman's death. Even after solving that mystery, his female features would re-emerge from time to time until he abandoned the body to fight death on it's own terrain.

* In the ''[[Buffy the Vampire Slayer]]'' pseudo-crossover fic ''[[Xendra]]'', this trope hits Xander with a ''vengeance''. First he's transformed into [[Xena: Warrior Princess]] on That Halloween. Then a spell performed to ''find'' the Halloween Xena lookalike briefly turns him into a teenaged Xena. Then Drusilla uses a stored spell to turn him into teen!Xena ''again''. While that's undone a few months later, Amy and Willow -- trying to learn how to store a spell in a crystal as Drusilla had used -- find their only success is with yet another instance of the spell to turn him into Xena, which leads to multiple transformations (which Willow or Amy can undo afterward). It eventually reaches a point where any time the Scoobies need an untraceable female or an extra near-slayer-level fighter, Xander's gender gets toggled. And after {{spoiler|Faith, under the influence of mind-altering magic, rapes a semiconscious Xander in both forms, Xander has to go to therapy as Xendra}} twice a week. Eventually the magical principle called the Law of Precedent (the more a particular magic has been performed, the easier it becomes to perform) takes over, and it seems that ''any'' sufficiently strong magic in Xander's vicinity will turn him into Xendra.

** Initially averted with Andrew, who was turned into a teenaged [[Star Wars|Princess Leia]], and wanted desperately to be turned ''back'' into a girl because the experience led him to acknowledge that he's [[transgender]]. However, he gets permanently transformed as part of undoing Xander's initial stint as Xendra.