role reversal
The exchanging of two characters's usual traits or roles. For example: Character A has Character B's height and vice versa, or Character A and Character B doing each other's supposed usual chores.
Although similar, these two tags should not be confused with "role reversal":
- costume switch: two characters wearing each other's default clothes and nothing else
- personality switch: two characters having each other's known personalities and nothing else
- reversible couple: two characters acting dominant and submissive to each other
