The legacy of the mask in professional wrestling dates back to France and the World Fair in 1865.
Implanted in the United States following the sport's permanent shift from legitimate competition, it was the mask's introduction to Mexico during the early establishment of lucha libre, that entrenched it firmly in wrestling folklore.
Used primarily in Mexico to conceal a wrestler's real identity for the duration of their career, the mask can serve a number of purposes and is a more lucrative contrivance than a championship belt.
Outside of Mexico, masks have, over the course of history, proved to be a fruitful artifice in facilitating an instant character and aura around a previously unknown wrestler.
Whether allowing workers in the territories to compete under more than one persona in different locations or adding new life to a tired or tepid performer, wrestling masks have historically helped enkindle many a legendary gimmick.
However, the carny nature of pro wresting requires a certain amount of duplicity, and masked gimmicks are no exception to the rule.
Over the years many masked gimmicks have traded ownership, some under the full understanding of the audience, while others have been more contentious, emerging from copyright claims and contract disputes.
Here are ten such instances of masked personas exchanging owners.