Heel

In common wrestling parlance, a heel is the term used to denote an adversarial or villainous competitor. Often victims of a crowd's disapproval or ire, heels are characterised by both their reluctance or refusal to submit to the rules set out by referees and their general disdain of the heroic archetypes exhibited by fan favourites.

Where their opposite counterparts fight "honourably" - by following the rules and never using foreign objects or outside assistance (unless a match specifically allows them) - heels will often use the rules to their advantage, such as intentionally getting themselves disqualified in order to retain a championship title (as titles normally cannot change hands if a match ends in a disqualification).