When a person physically transforms into a replica of a different person.
1- Must be from person to person
Must be human, or at least look like one.
No personifications(e.g. post #9100259), no humanizations(e.g. post #3617414), no monsterifications(e.g. post #9321762), etc.
2- Must be a physical transformation
No skinsuits(e.g. post #5724769), no possessions(e.g. post #7554373), no body swaps(e.g. post #8081857), etc.
3- Must be a replica
A perfect or near perfect copy, of either a copyrighted character or some other character shown to exist within that universe(e.g. post #8349123).
Just because someone changed into what feels like a complete different person doesn't means it belongs in this pool(e.g. post #9264155).
4- Must be a different person
Don't put in characters turning into alternate versions of themselves(e.g. post #3175160, post #3134824), unless both versions are present(e.g. post #3268500).
