The bad guy. The villain. The one who cheats, talks trash, and makes the crowd want to throw things at the screen. Great heels don't just get booed — they make you genuinely angry. The best part? The loudest boos usually mean the biggest merch sales. See: MJF, vintage Triple H, literally anyone who has ever hit someone with a chair during a handshake.
"He turned heel at WrestleMania by attacking his own tag partner. The crowd lost their minds."